Beast Within

Destroy target permanent. Its controller creates a 3/3 green Beast creature token.

Meekstone

Creatures with power 3 or greater don't untap during their controllers' untap steps.

Fell the Mighty

Destroy all creatures with power greater than target creature's power.

Wave of Reckoning

Each creature deals damage to itself equal to its power.

Resolute Watchdog

Defender
{1}, Sacrifice Resolute Watchdog: Target creature you control gains indestructible until end of turn. (Damage and effects that say "destroy" don't destroy it.)