Screamer-Killer

Whenever you cast a Spirit or Arcane spell, this creature deals 1 damage to target creature.

Heroic — Whenever you cast a spell that targets this creature, this creature deals 2 damage to any target.

Trample (This creature can deal excess combat damage to the player it's attacking.)

Whenever you cast a historic spell, Surtr deals 3 damage to any target. (Artifacts, legendaries, and Sagas are historic.)

Whenever you cast an instant, sorcery, or Wizard spell, this creature deals 1 damage to any target.

( can be paid with either or 2 life.)

Whenever you cast a spell with in its mana cost, this artifact deals damage equal to that spell's mana value to any target.

Whenever this creature attacks, you may pay and discard a card. If you do, this creature deals damage to target creature or planeswalker equal to the discarded card's mana value.