Stack Trainer

Each scenario plays out a real rules situation step by step — with the actual cards on the stack and battlefield. Before the resolution it's your turn: what happens? Every step links the relevant Comprehensive Rules.

Bolt, Counterspell, Dispel Beginner

The classic: three spells stacked up. Whoever wins the counter war is decided by the order.

Lightning Bolt Counterspell Dispel
Fizzling Is Not Countering Judge Level 1

A Bolt loses its target — what happens next is, rules-wise, something entirely different from a Counterspell.

Lightning Bolt Grizzly Bears Village Rites
"This Spell Can't Be Countered" Judge Level 1

Counterspell on Abrupt Decay: is that even a legal target — and what happens then?

Abrupt Decay Counterspell Sensei's Divining Top
Split Second Judge Level 1

Krosan Grip is on the stack — and suddenly almost nobody is allowed to do anything.

Krosan Grip Sol Ring Counterspell
Copying Spells: Twincast Judge Level 1

A copy may choose new targets — but it was never cast. That has consequences.

Lightning Bolt Twincast Guttersnipe
Storm: Countering (Almost) Doesn't Help Judge Level 1

Grapeshot with storm 3 — and your Counterspell only catches a quarter of it.

Grapeshot Counterspell
The Ability Outlives Its Source Beginner

The Pyromancer dies in response — its damage still arrives.

Prodigal Pyromancer Shock
Mana Abilities Don't Use the Stack Beginner

"In response to the mana!" — rules-wise, that sentence doesn't exist.

Llanowar Elves Lightning Bolt
The Trigger in the Response Chain Judge Level 1

The Bolt gets countered — but the Guttersnipe trigger reached the stack first.

Guttersnipe Lightning Bolt Counterspell
No Legal Target: Rewind Everything Judge Level 1

Doom Blade against a hexproof Bogle — why the spell doesn't even stay on the stack.

Doom Blade Slippery Bogle
The Combat Trick Beginner

Giant Growth saves your blocker — but only if you hit the right window.

Hill Giant Grizzly Bears Giant Growth
Blocked Stays Blocked Judge Level 1

You kill the blocker before damage — and your attacker still hits nothing.

Hill Giant Grizzly Bears Shock
First Strike: Two Damage Steps Beginner

2/2 against 2/2 — and still only one of them dies.

Grizzly Bears White Knight
Removal After Attackers Are Declared Judge Level 1

The Hellrider dies instantly — its attack trigger burns you anyway.

Hellrider Doom Blade
Deathtouch + Trample Judge Level 1

Why 1 damage is enough for the blocker — and 5 trample through.

Colossal Dreadmaw Bow of Nylea Grizzly Bears
Tapping Before the Attack Beginner

Icy Manipulator against the attacker — but only in the right step.

Icy Manipulator Hill Giant
Two-Headed Giant: Combat vs. the Team Judge Level 1

Two attackers, two defending heads, ONE life total.

Grizzly Bears Hill Giant
Counters Cancel Out Judge Level 1

+1/+1 meets -1/-1 — and both vanish without anyone being able to react.

Grizzly Bears Llanowar Elves Fume Spitter
The Legend Rule Judge Level 1

Two Krenkos, one problem — and your opponent doesn't even get a say.

Krenko, Mob Boss
Both at 0: It's a Draw Judge Level 1

Flame Rift takes both players to 0 at once — who wins?

Flame Rift
Blood Moon vs. Urborg Judge Level 1

Urborg came later — and still loses. Dependency beats timestamps.

Blood Moon Urborg, Tomb of Yawgmoth
"Becomes 1/1" vs. Counters Judge Level 1

Turn to Frog makes everything a 1/1 — except the counters get a say.

Turn to Frog Grizzly Bears
Replacement Order: You Choose Judge Level 1

Doubling and adding — the right order turns 6 counters into 8.

Corpsejack Menace Master Biomancer Walking Ballista
Rest in Peace Eats "Dies" Triggers Judge Level 1

The Traveler dies … or does it? Exile instead of graveyard — and no Spirit.

Rest in Peace Doomed Traveler Shock
X on the Stack Judge Level 1

Fireball with X=1 — and suddenly Spell Snare counters it.

Fireball Spell Snare
"Free" With Taxes Judge Level 1

Force of Will for 0 mana? Not while Thalia is watching.

Force of Will Thalia, Guardian of Thraben
Morph: Turning Face Up Without the Stack Judge Level 1

The Bolt is flying — and the face-down 2/2 simply turns it around.

Willbender Lightning Bolt
Commander Tax & Zone Changes Judge Level 1

Krenko dies — and gets more expensive the second time.

Krenko, Mob Boss Doom Blade
21 Commander Combat Damage Judge Level 1

Your opponent still has 19 life — and loses anyway.

Zurgo Helmsmasher Lightning Bolt
Humility + Opalescence Judge Level 2

The layer endboss: two enchantments, and the answer depends on who arrived first.

Humility Opalescence
Blood Moon + Spreading Seas Judge Level 2

Two layer-4 effects on the same land — and this time the clock really does decide.

Blood Moon Spreading Seas Mutavault
You Copy the Card, Not the State Judge Level 2

Clone copies a 6/6 Bear — and enters as a 2/2.

Clone Grizzly Bears Giant Growth
Tarmogoyf Survives Its Own Death Judge Level 2

The Bolt is lethal — until it hits the graveyard and grows the Goyf.

Tarmogoyf Lightning Bolt
Ixidron: Everything Face Down Judge Level 2

All creatures become 2/2s with nothing — but only one of them ever comes back up.

Ixidron Willbender Grizzly Bears
Undying and Last Known Information Judge Level 2

Three -1/-1 counters on the 2/2 Wolf — and undying is left staring.

Young Wolf Skinrender
Blood Artist in the Board Wipe Judge Level 2

Everything dies at once — and the dead artist still triggers for everyone. Including himself.

Blood Artist Grizzly Bears Day of Judgment
Reloading Persist Judge Level 2

Remove the counter in time — and the Finks simply die again in style.

Kitchen Finks Power Conduit Doom Blade
Resolved Effects Survive Ability Loss Judge Level 2

Humility strips Sower of Temptation's ability — the stolen creature stays stolen anyway.

Sower of Temptation Humility Grizzly Bears
Mutavault Under Humility Judge Level 2

All creatures are 1/1 — except the land that activated later.

Humility Mutavault
Doubled Twice Judge Level 2

Doubling Season meets Anointed Procession — 3 Goblins become 12.

Doubling Season Anointed Procession Krenko, Mob Boss
The Shield and the Skullcrack Judge Level 2

Skullcrack goes right through your prevention shield — but doesn't use it up.

Healing Salve Skullcrack Lightning Bolt
Exile Replacement Beats Undying Judge Level 2

Anger of the Gods burns the Wolf away — permanently.

Anger of the Gods Young Wolf
Panharmonicon Doesn't Double Counters Judge Level 2

The trigger fires twice — but "enters with X counters" isn't a trigger at all.

Panharmonicon Wall of Omens Walking Ballista
Madness: A Discard With a Detour Judge Level 2

Fiery Temper leaves your hand — and lands on the stack as 3 damage.

Lightning Axe Fiery Temper
The Copy Knows Its X Judge Level 2

Fireball with X=5 gets copied — and the copy burns just as big.

Fireball Twincast
Token Copy of a Transformed Card Judge Level 2

The old judge answer has become wrong: today the token has both faces.

Delver of Secrets // Insectile Aberration Cackling Counterpart
Clone Doesn't Copy the Secret Judge Level 2

Cloning a face-down creature — you get a sad, face-up 2/2.

Clone Willbender
Blood Moon vs. the Dryad Corner Cases

No dependency this time: the Dryad turns Mountains into rainbow lands — if she came later.

Blood Moon Dryad of the Ilysian Grove
Phasing Out: Briefly Nonexistent Corner Cases

The Bears vanish from reality, Rancor and all — and Doom Blade grasps at nothing.

Grizzly Bears Rancor Doom Blade
The Fiend Hunter Trap Corner Cases

Killing the hunter in response feels right — and exiles your creature forever.

Fiend Hunter Grizzly Bears Shock
The Switch Always Comes Last Corner Cases

+3/+0 on the switched creature — and the 3 ends up on toughness.

Omenspeaker Twisted Image Sure Strike
Time Stop vs. the Extra Turn Corner Cases

"End the turn" is no Counterspell — it's a black hole for the whole stack.

Time Warp Time Stop