Bituminous Blast [Archenemy]

Bituminous Blast [Archenemy]Set: Archenemy Type: Instant Rarity: Uncommon Cost: {3}{B}{R} Cascade (When you cast this spell, exile cards from the top of your library until you exile a nonland card that costs less. You may cast it without paying its mana cost. Put the exiled cards on the bottom of your library in a random order.) Bituminous Blast deals 4 damage to target creature.

It shelters all beneath its stormy cloak

as tough as a scute bug

Aether Figment can't be blocked

Set: Magic Origins Type: Basic Land — Forest Rarity: Common ({T}: Add {G}

Set: Hour of Devastation Type: Creature — Sphinx Rarity: Uncommon Cost: {3}{U}{U} Flying

You may pay {U} to end this effect

Set: Kaladesh Type: Artifact Rarity: Common Cost: {2} When Cogworker's Puzzleknot enters the battlefield

Set: Commander 2017 Type: Creature — Vampire Rarity: Rare Cost: {1}{B}{B} Other Vampire creatures you control get +1/+1

I found their training to be remarkably similar

When the battle is over

you may pay {1}{U}

"From your death