Prowess

Creatures with power less than Elusive Otter's power can't block it.

Grove's Bounty XG

Sorcery — Adventure

Distribute X +1/+1 counters among any number of target creatures you control.

Prowess (Whenever you cast a noncreature spell, this creature gets +1/+1 until end of turn.)
Creatures with power less than this creature's power can't block it.

Distribute X +1/+1 counters among any number of target creatures you control. (Then exile this card. You may cast the creature later from exile.)