Wormwood Dryad
Creature — Dryad3/1$0.06
: This creature gains forestwalk until end of turn and deals 1 damage to you. (It can't be blocked as long as defending player controls a Forest.) : This creature gains swampwalk until end of turn and deals 1 damage to you. (It can't be blocked as long as defending player controls a Swamp.)
Legal in Commander