Echo of the Vine

Ninjutsu {u}{b} ({u}{b}, Return an unblocked attacker
you control to hand: Put this card onto the battlefield
from your hand tapped and attacking.)
First strike
Whenever a Squashling creature you control
deals combat damage to an opponent, you
may prevent that damage and put that many
Seed counters on a target Squashling
permanent that you control.