Until your next turn, whenever a creature becomes tapped, destroy it
Any effect that can double damage is huge, and the speed that haste provides can help you to close out games
(You may cast it as a sorcery on a later turn without paying its mana cost.) Whenever you cast a multicolored instant or sorcery spell from your hand, exile that spell instead of putting it into your graveyard as it resolves
We recommend choosing your first two colors based on your favorite characters
Putting this all together, we can establish the following facts: A Magic card does not need to feature the traditional Magic card back in order to be tournament-legal, as long as the cards are played in an opaque sleeve
The life-to-mana conversion makes explosive turns possible, letting you chain demons onto the battlefield in a single push