RiGuu, Temporal Tinkerer

+2: You may Activate any number of RiGuu's abilities each turn. Each ability may only be activated once Draw two cards. Discard three cards next end
-2: Return up to two permanents you control to your hand. return up to that many permanents you don't control that share type to owner hand
-7: Exile three permanents. Those permanent's controllers may cast those cards from exile this turn without paying their mana costs