Urn summoned evil avatar

Haste, menace
When Urn enters the battlefield target opponent
reveals cards from the top of their library until 3
non-land cards are revealed, for each creature
revealed this way put a +1/+1 counter on Urn, for
each artifact or enchantment revealed this way your
opponent discards a card, and for each instant or
sorcery card revealed this way draw a card, your opponent shuffles every card revealed this way
Back into their deck.