Gypsum Arus

Flying, trample, haste
At the beginning of your upkeep, sacrifice
Gypsum Arus unless you pay {g}{r}{u}.
When Gypsum Arus dies, choose between
creature, artifact, enchantment, planeswalker,
and land at random. Search your library for a
card that shares a type with the chosen type and
put it onto the battlefield, then shuffle.