Cast Sylvan Awakening for ({2} magic symbol) ({G} magic symbol) , causing all lands you control to become 2/2 creatures with reach, indestructible, and haste in addition to their other types until your next turn.
Activate an untapped land you control by tapping it, adding at least ({1} magic symbol) .
Repeat step 2 until you control fifteen tapped creatures.
Activate Halo Fountain by paying ({W} magic symbol) ({W} magic symbol) ({W} magic symbol) ({W} magic symbol) ({W} magic symbol) , tapping it, and untapping fifteen creatures you control, causing you to win the game.