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At the beginning of your upkeep, you may sacrifice a token. If you do, put an acorn counter on Chitterspitter. Squirrels you control get +1/+1 for ...

Whenever you gain life, you may put that many +1/+1 counters on each creature you control. You may do this only once each turn.

Target noncreature artifact you control becomes a 0/0 artifact creature. Put four +1/+1 counters on each artifact that became a creature this way. ...

{T}: Add {C}. {1}: Mishra's Factory becomes a 2/2 Assembly-Worker artifact creature until end of turn. It's still a land. {T}: Target Assembly-Work...

Return all permanents to their owners' hands.

Whenever a player casts an instant or sorcery spell, put a number of charge counters on Geometric Nexus equal to that spell's mana value. {6}, {T},...

You may cast Rout as though it had flash if you pay {2} more to cast it. (You may cast it any time you could cast an instant.) Destroy all creature...

{2}, {T}, Sacrifice a creature: Search your library for a creature card that shares a creature type with the sacrificed creature and has mana value...

(As this Saga enters and after your draw step, add a lore counter. Sacrifice after III.) I — Create a 1/1 blue Bird creature token with flying. You...

Double strike Whenever Efreet Flamepainter deals combat damage to a player, you may cast target instant or sorcery card from your graveyard without...

As an additional cost to cast this spell, exile an instant or sorcery card from your graveyard. Draconic Intervention deals X damage to each non-Dr...

When Poet's Quill enters the battlefield, learn. (You may reveal a Lesson card you own from outside the game and put it into your hand, or discard ...

{G}: Exile target card from a graveyard. If it was a creature card, put a +1/+1 counter on Scavenging Ooze and you gain 1 life.

When Maul of the Skyclaves enters the battlefield, attach it to target creature you control. Equipped creature gets +2/+2 and has flying and first ...

Create X 1/1 white Soldier creature tokens. If X is 5 or more, destroy all other creatures.

Equipped creature gets +1/+1 for each charge counter on Mace of the Valiant and has vigilance. Whenever a creature enters the battlefield under you...

Create five 1/1 white Human creature tokens. If this spell was cast from a graveyard, create ten of those tokens instead. Flashback {7}{W}{W} (You ...

For Mirrodin! (When this Equipment enters the battlefield, create a 2/2 red Rebel creature token, then attach this to it.) Equipped creature gets +...

Flying Landfall — Whenever a land enters the battlefield under your control, you may create a 1/1 white Bird creature token with flying.

Escalate—Tap an untapped creature you control. (Pay this cost for each mode chosen beyond the first.) Choose one or more — • Destroy target creatur...

When Siege-Gang Commander enters the battlefield, create three 1/1 red Goblin creature tokens. {1}{R}, Sacrifice a Goblin: Siege-Gang Commander dea...

When Denizen of the Deep enters the battlefield, return each other creature you control to its owner's hand.

When Denizen of the Deep enters the battlefield, return each other creature you control to its owner's hand.

For each opponent, gain control of up to one target creature or planeswalker that player controls with mana value 3 or less.