Kashi Kashi, Whisper Strike

Delve (You may exile any number of cards from your graveyard as you cast this spell. It costs {1} less to cast
for each card exiled this way.)
Trample
Other Snake and Hydra creatures you control
have trample.
Kashi Kashi, Whispering Strike has +X/+X
where X is the number of cards in exile.