Krark-Clan Shaman

Sacrifice an artifact: Krark-Clan Shaman deals 1 damage to each creature without flying.

Rust

Counter target activated ability from an artifact source. (Mana abilities can't be targeted.)

Red Elemental Blast

Choose one —
• Counter target blue spell.
• Destroy target blue permanent.

Blue Elemental Blast

Choose one —
• Counter target red spell.
• Destroy target red permanent.

Gorilla Shaman

{X}{X}{1}: Destroy target noncreature artifact with mana value X.

Nihil Spellbomb

{T}, Sacrifice Nihil Spellbomb: Exile target player's graveyard.
When Nihil Spellbomb is put into a graveyard from the battlefield, you may pay {B}. If you do, draw a card.

Fling

As an additional cost to cast this spell, sacrifice a creature.
Fling deals damage equal to the sacrificed creature's power to any target.