Spooky20

{R}: Target creature you control gains haste until end of turn. (It can attack and {T} this turn.)

Cinder Storm deals 7 damage to any target.

Each player loses 1 life for each creature they control.

Trample Goblin Gaveleer gets +2/+0 for each Equipment attached to it.

Haste

When Omenspeaker enters the battlefield, scry 2. (Look at the top two cards of your library, then put any number of them on the bottom of your libr...

Draw two cards, then discard a card at random. Flashback {2}{U} (You may cast this card from your graveyard for its flashback cost. Then exile it.)

{R}: Chartooth Cougar gets +1/+0 until end of turn. Mountaincycling {2} ({2}, Discard this card: Search your library for a Mountain card, reveal it...

Defender When Dragon Egg dies, create a 2/2 red Dragon creature token with flying and "{R}: This creature gets +1/+0 until end of turn."

Chandra's Outrage deals 4 damage to target creature and 2 damage to that creature's controller.

Heroic — Whenever you cast a spell that targets Arena Athlete, target creature an opponent controls can't block this turn.

Destroy target artifact. If that artifact had counters on it, put that many +1/+1 counters or charge counters on an artifact you control.

Any player may have Browbeat deal 5 damage to them. If no one does, target player draws three cards.

Carbonize deals 3 damage to any target. If it's a creature, it can't be regenerated this turn, and if it would die this turn, exile it instead.

As an additional cost to cast this spell, discard two cards. Draw three cards.

Up to two target creatures each get +1/+0 and gain first strike until end of turn.

When Balduvian Horde enters the battlefield, sacrifice it unless you discard a card at random.

Destroy target creature. Spell mastery — If there are two or more instant and/or sorcery cards in your graveyard, you gain 2 life.

Brimstone Volley deals 3 damage to any target. Morbid — Brimstone Volley deals 5 damage instead if a creature died this turn.

Whenever Borderland Marauder attacks, it gets +2/+0 until end of turn.

Defender (This creature can't attack.) {T}: Prevent the next 1 damage that would be dealt to any target this turn.

Destroy target artifact or enchantment.