League Supremacy

When League Supremacy enters the battlefield, discard a card. Deal X damage divided as you choose among X target permanents and/or players, where X is the converted mana cost of the discarded card.
Whenever you cast a blue or red instant or sorcery spell, you may pay {u/r}. If you do, flip a coin:
•If you win, change that spell's text by replacing all instances of the word "target" with the word "each."
•If you lose, that spell gains Jump-Start until the
end of your next turn.