Whenever a creature you control attacks, it gets +2/+0 until end of turn and Anthem of Rakdos deals 1 damage to you.

Hellbent — As long as you have no cards in hand, if a source you control would deal damage to a permanent or player, it deals double that damage to that permanent or player instead.

Cackling Flames deals 3 damage to any target.

Hellbent — Cackling Flames deals 5 damage instead if you have no cards in hand.

Demonfire deals X damage to any target. If a creature dealt damage this way would die this turn, exile it instead.

Hellbent — If you have no cards in hand, this spell can’t be countered and the damage can’t be prevented.

Flying

Hellbent — Demon’s Jester gets +2/+1 as long as you have no cards in hand.

Hellbent — As long as you have no cards in hand, Gobhobbler Rats gets +1/+0 and has “{B}: Regenerate Gobhobbler Rats.” (The next time it would be destroyed, instead tap it, remove it from combat, and heal all damage on it.)

Reveal a card from your hand. Search your library for a card with the same name as that card, reveal it, put it into your hand, then shuffle.

Hellbent — If you have no cards in hand, instead search your library for a card, put it into your hand, then shuffle.

Whenever Jagged Poppet is dealt damage, discard that many cards.

Hellbent — Whenever Jagged Poppet deals combat damage to a player, if you have no cards in hand, that player discards cards equal to the damage.

{2}{B}, Discard a card: Target opponent loses 1 life and you gain 1 life.

Hellbent — {1}, Pay 2 life: Draw a card. Activate only if you have no cards in hand.

Hellbent — {T}, Sacrifice a creature or land: Draw a card. Activate only if you have no cards in hand.

{R}{R}: Rakdos Pit Dragon gains flying until end of turn.

{R}: Rakdos Pit Dragon gets +1/+0 until end of turn.

Hellbent — Rakdos Pit Dragon has double strike as long as you have no cards in hand.

Hellbent — When Slaughterhouse Bouncer dies, if you have no cards in hand, target creature gets -3/-3 until end of turn.

Defender (This creature can’t attack.)

{B}: Slithering Shade gets +1/+1 until end of turn.

Hellbent — Slithering Shade can attack as though it didn’t have defender as long as you have no cards in hand.

Enchant creature

Enchanted creature gets +2/+0.

Hellbent — Enchanted creature gets an additional +2/+0 as long as you have no cards in hand.

Twinstrike deals 2 damage to each of two target creatures.

Hellbent — Destroy those creatures instead if you have no cards in hand.