Eloise, Technologic Spirit

Flying
When Eloise, Technologic Spirit deals combat
damage to a player, that player reveals cards from
the top of their library until the reveal a land.
Put all cards revealed in this way into their
owner's graveyard and you create a colorless
Treasure artifact token with "Tap, Sacrifice this artifact: Add one mana of any color." for each
card put into the graveyard in this way.