Jace but not

Can’t be countered except by spells or abilities. Jace has trample while blocked by a creature with toughness greater than its power. {1}: Add {W}{U}{B}{R}{G}, then empty your mana pool, the next spell you cast this step costs {1} less to cast. Your opponents can win the game and you can lose the game. Whenever an opponent loses life, you gain life equal to the life they gained.