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This spell can't be countered. Flying Whenever you draw a card, Niv-Mizzet deals 1 damage to any target. Whenever a player casts an instant or sorc...

Destroy target permanent an opponent controls. Its controller may search their library for a basic land card, put it onto the battlefield, then shu...

Undergrowth — When Izoni, Thousand-Eyed enters the battlefield, create a 1/1 black and green Insect creature token for each creature card in your g...

Whenever you cast an instant or sorcery spell, put a charge counter on Firemind's Research. {1}{U}, Remove two charge counters from Firemind's Res...

Choose one or both — • Deafening Clarion deals 3 damage to each creature. • Creatures you control gain lifelink until end of turn.

Mentor (Whenever this creature attacks, put a +1/+1 counter on target attacking creature with lesser power.) {2}{R}{W}: Boros Challenger gets +1/+1...

Flying Mentor (Whenever this creature attacks, put a +1/+1 counter on target attacking creature with lesser power.) At the beginning of combat on...

Target creature gets +3/+3 until end of turn. Target creature gets +3/+3 until end of turn. Target creature gets +3/+3 until end of turn.

Undergrowth — Target creature gets -X/-X until end of turn, where X is the number of creature cards in your graveyard. If that creature would die t...

Convoke (Your creatures can help cast this spell. Each creature you tap while casting this spell pays for {1} or one mana of that creature's color....

Counter target spell. Surveil 1. (Look at the top card of your library. You may put that card into your graveyard.)

Gain control of target creature with power 2 or less.

Target opponent reveals their hand. You choose a nonland card from it. That player discards that card. Surveil 1. (Look at the top card of your lib...

({T}: Add {U} or {B}.) As this land enters, you may pay 2 life. If you don't, it enters tapped.

[+2]: You may sacrifice another permanent. If you do, you gain 1 life and draw a card. [−3]: Destroy target nonland permanent with mana value 3 or ...

Convoke (Your creatures can help cast this spell. Each creature you tap while casting this spell pays for {1} or one mana of that creature's color....

Choose a card name. Search target opponent's graveyard, hand, and library for up to four cards with that name and exile them. That player shuffles,...

If you would draw a card, instead look at the top three cards of your library, then put one into your hand and the rest into your graveyard. Pay 4 ...

Whenever you cast an instant or sorcery spell, copy it for each other instant and sorcery spell you've cast before it this turn. You may choose new...

Flying Whenever this creature deals combat damage to a player, look at the top three cards of that player's library, exile one of them face down, t...

({T}: Add {G} or {W}.) As this land enters, you may pay 2 life. If you don't, it enters tapped.

Haste Mentor (Whenever this creature attacks, put a +1/+1 counter on target attacking creature with lesser power.) Prevent all noncombat damage tha...

({T}: Add {U} or {R}.) As this land enters, you may pay 2 life. If you don't, it enters tapped.

({T}: Add {R} or {W}.) As this land enters, you may pay 2 life. If you don't, it enters tapped.