
Islandwalk (This creature can't be blocked as long as defending player controls an Island.)
{G}: Regenerate this creature.
River Boa has 12 printings, first in Visions (1997). EDHREC ranks it #16,877 among Commander cards. It appears most in Aphelia, Viper Whisperer decks (1,934 on EDHREC).
Deck counts from EDHREC.
Cards that show up in the same decks on EDHREC.