Surrealism Space

At the beginning of your upkeep, choose an
option you have not chosen before. If there are
no options left, sacrifice Surrealism Space.
• Create a 3/3 Giant Dog creature token.
• Target opponent mills 3.
• You gain 4 life.
When you Sacrifice Surrealism Space, copy target instant or sorcery from a graveyard and cast it without paying it's mana cost.