
Whenever you cast a spell, proliferate. (Choose any number of permanents and/or players, then give each another counter of each kind already there.)
Inexorable Tide has 8 printings, first in Scars of Mirrodin (2010). EDHREC ranks it #992 among Commander cards. It appears most in Atraxa, Praetors' Voice decks (23,383 on EDHREC). 2 public decks on TCG run it. It has 7 official rulings.
Deck counts from EDHREC.
Cards that show up in the same decks on EDHREC.