Cityscape Desolator

When Cityscape Desolator enters the battlefield,
choose one:
•Each player discards 5 cards and loses 5 life.
•Exile target non-creature permanent.
•Each player exiles their graveyard.
{b}{b}, Exile the top card of your library: Put a
+1/+1 counter on Cityscape Desolator. You may
discard any number of cards.