
At the beginning of each player's upkeep, that player puts a flood counter on target non-Island land they control of their choice. That land is an Island for as long as it has a flood counter on it.
At the beginning of each end step, if all lands on the battlefield are Islands, remove all flood counters from them.
Quicksilver Fountain has 1 printing, first in Mirrodin (2003). EDHREC ranks it #13,769 among Commander cards. It appears most in Eluge, the Shoreless Sea decks (1,441 on EDHREC). It has 2 official rulings.
Deck counts from EDHREC.
Cards that show up in the same decks on EDHREC.