The Oracle of Horizons

The Oracle of Horizons is not a creature unless you control 10 or more other lands.
Power and Toughness is equal to the number of permanents with 2 or more types on the battlefield.

At the beginning of each opponent's end step, draw a card if a land entered under their control this turn, or put a land from your hand onto the battlefield if no land entered this turn. If you can't do either, each player shuffles then exiles the top card of their library, if it is a permanent card with 2 or more types