Furina, Archon of Blue Seas

The first 3 times each turn an effect would create a
token under your control, draw a card.
At the beginning of your postcombat main phase,
you may either proliferate or populate X times,
where X is half the number of blue creatures you
control.

{w}{u}{b}{r}{g},{t} - Sacrifice 10 tokens, search your library for a card with mana value 10 or less and put
it into your hand then shuffle your library.