
Whenever you gain life, you may pay {X}, where X is less than or equal to the amount of life you gained. If you do, draw X cards.
Well of Lost Dreams has 11 printings, first in Darksteel (2004). EDHREC ranks it #1,119 among Commander cards. It appears most in Frodo, Adventurous Hobbit // Sam, Loyal Attendant decks (11,676 on EDHREC). 5 public decks on TCG run it.
Deck counts from EDHREC.
Cards that show up in the same decks on EDHREC.