Agent 3, Splatsville Hero

Skulk (This creature can't be blocked by creatures
with greater power.)
When Agent 3 attacks and isn't blocked, you may
pay {u}. If you do, put an Ink counter on target
land the defending player controls that doesn't
already have an Ink counter on it.
At the beginning of your end step, if opponents control six or more lands with Ink counters on
them, you win the game.