Cruel Feeding

Strive — This spell costs {2}{B} more to cast for each target beyond the first.
Any number of target creatures each get +1/+0 and gain lifelink until end of turn. (Damage dealt by a creature with lifelink also causes its controller to gain that much life.)

Fanatic of Mogis

When Fanatic of Mogis enters the battlefield, it deals damage to each opponent equal to your devotion to red. (Each {R} in the mana costs of permanents you control counts toward your devotion to red.)

Magma Jet

Magma Jet deals 2 damage to any target. Scry 2.

Kragma Warcaller

Minotaur creatures you control have haste.
Whenever a Minotaur you control attacks, it gets +2/+0 until end of turn.

Read the Bones

Scry 2, then draw two cards. You lose 2 life.

Ragemonger

Minotaur spells you cast cost {B}{R} less to cast. This effect reduces only the amount of colored mana you pay. (For example, if you cast a Minotaur spell with mana cost {2}{R}, it costs {2} to cast.)

Pharika's Cure

Pharika's Cure deals 2 damage to target creature and you gain 2 life.

Magma Spray

Magma Spray deals 2 damage to target creature. If that creature would die this turn, exile it instead.

Lightning Strike

Lightning Strike deals 3 damage to any target.

Minotaur Skullcleaver

Haste
When Minotaur Skullcleaver enters the battlefield, it gets +2/+0 until end of turn.

Deathbellow Raider

Deathbellow Raider attacks each combat if able.
{2}{B}: Regenerate Deathbellow Raider.

Purphoros, God of the Forge

Indestructible
As long as your devotion to red is less than five, Purphoros isn't a creature.
Whenever another creature enters the battlefield under your control, Purphoros deals 2 damage to each opponent.
{2}{R}: Creatures you control get +1/+0 until end of turn.

Swamp

Mogis, God of Slaughter

Indestructible
As long as your devotion to black and red is less than seven, Mogis isn't a creature.
At the beginning of each opponent's upkeep, Mogis deals 2 damage to that player unless they sacrifice a creature.