Keeper of the Lotus

Flying, Defender, Hexproof
Landfall—Conjure a Hyrulean Knight to the top
of your library. Conjure an additional one for
each commander you control. If you control
Hylia, you may pay {3}, if you do then conjure a
Lotus Petal to your hand.
At the beginning of your upkeep if you control
fifteen or more Lotus Petals, you win the game.