Tyranid Invasion

Hexproof
At the beginning of your upkeep, you gain 1 bio counter.
{u}{r}{g} : You gain 1 bio counter
{2}{u}{r}{g}, Pay 3 bio counters : Search your
library for target creature card with converted
mana cost 3 or less, then shuffle your library.
{3}{u}{r}{g}, Pay 5 bio counters : Search your
library for target creature card with converted
mana cost 5 or less, then shuffle your library.