Whenever Tuya Bearclaw attacks, it gets +X/+X until end of turn, where X is the greatest power among other creatures you control.

Whenever this creature attacks, each other creature you control gets +X/+X until end of turn, where X is this creature's power.

Trample

Other Orcs and Goblins you control have trample.

Whenever this creature attacks, it gets +X/+0 until end of turn, where X is the greatest power among creatures you control.

Whenever this creature attacks, it gets +X/+0 until end of turn, where X is the number of attacking creatures you control.

Partner with Proud Mentor (When this creature enters, target player may put Proud Mentor into their hand from their library, then shuffle.)

Whenever this creature attacks, it gets +X/+0 until end of turn, where X is the greatest power among tapped creatures your opponents control.

Haste (This creature can attack and as soon as it comes under your control.)

Whenever this creature attacks, other creatures you control get +1/+0 until end of turn.

Haste (This creature can attack and as soon as it comes under your control.)

Whenever Ruby attacks while you control a creature with power 4 or greater, Ruby gets +2/+2 until end of turn.

: Add or .

Riot (This creature enters with your choice of a +1/+1 counter or haste.)

Whenever this creature attacks, another target creature you control gets +X/+0 until end of turn, where X is this creature's power.

Whenever this creature attacks, Human creatures you control get +1/+0 until end of turn.

Whenever this creature attacks, creatures you control get +1/+0 until end of turn.

Whenever this creature attacks, if you control no untapped lands, it gets +3/+0 until end of turn.

Trample

Whenever this creature attacks, another target creature you control gains trample and gets +X/+X until end of turn, where X is this creature's power.

Whenever this creature attacks, it gets +X/+X until end of turn, where X is the number of legendary creatures you control.

Haste

Boast — : You may change Arni's base power to 1 plus the greatest power among other creatures you control until end of turn. (Activate only if this creature attacked this turn and only once each turn.)

Whenever this creature attacks, it gets +1/+1 until end of turn for each Forest you control.

Whenever this creature attacks, it gets +1/+1 until end of turn for each untapped creature you control.

Whenever this creature attacks, Goblin creatures you control get +1/+1 until end of turn.

Dash (You may cast this spell for its dash cost. If you do, it gains haste, and it's returned from the battlefield to its owner's hand at the beginning of the next end step.)

Whenever this creature attacks, target creature you control gets +1/+1 until end of turn.