Trample

Spree (Choose one or more additional costs.)

+ — All creatures lose all abilities until end of turn.

+ — Choose a creature you control. It gains indestructible until end of turn.

+ — Destroy all creatures.

Meteor Shower deals X plus 1 damage divided as you choose among any number of targets.

Flying, trample

When Rakdos, the Showstopper enters, flip a coin for each creature that isn't a Demon, Devil, or Imp. Destroy each creature whose coin comes up tails.

When you cast this spell, copy it for each other instant and sorcery spell you've cast this turn. You may choose new targets for the copies.

Put a +1/+1 counter on target creature. It gains vigilance until end of turn.

(As this Saga enters and after your draw step, add a lore counter. Sacrifice after III.)

I — Exile the top four cards of your library. Until the end of your next turn, you may play those cards.

II, III — Whenever you cast a spell this turn, put a +1/+1 counter on target creature you control.

Shower of Coals deals 2 damage to each of up to three targets.

Threshold — Shower of Coals deals 4 damage to each of those permanents and/or players instead if seven or more cards are in your graveyard.

Until end of turn, creatures you control gain "When this creature dies, it deals 2 damage to target creature an opponent controls."

Flying, haste

Whenever you cast a noncreature spell, Slickshot Show-Off gets +2/+0 until end of turn.

Plot (You may pay and exile this card from your hand. Cast it as a sorcery on a later turn without paying its mana cost. Plot only as a sorcery.)

Put a double strike counter on target creature, then goad each creature that had a double strike counter put on it this way. (Until your next turn, those creatures attack each combat if able and attack a player other than you if able.)

Overload (You may cast this spell for its overload cost. If you do, change "target" in its text to "each.")