Xianyun, Eternal Breeze

Flying

Whenever a creature with power greater than
Xianyun's enters the battlefield under your control,
put a +1/+1 counter on Xianyun and draw a card.

{2}{w}{b}, {t} - Sacrifice Xianyun, search your
library for up to X land cards, where X is
Xianyun's power. Put those lands onto the
battlefield tapped and shuffle your library.