Arca, the Shared Dreamscape

Whenever a player plays a land, each other player
may put a land card from his or her hand onto
the battlefield tapped or draw a card.
Whenever a player draws a card, each other
player may gain 1 life.
Whenever a player casts a spell, each other
player may copy that spell by paying its mana
cost. Players may spend mana as though it were
mana of any color to cast the copy and can
choose new targets for the copy.
Indestructible