Devour 1 (As this enters, you may sacrifice any number of creatures. This creature enters with that many +1/+1 counters on it.)

When Caldera Hellion enters, it deals 3 damage to each creature.

Echo (At the beginning of your upkeep, if this came under your control since the beginning of your last upkeep, sacrifice it unless you pay its echo cost.)

When Crater Hellion enters, it deals 4 damage to each other creature.

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

If another red source you control would deal damage to a permanent or player, it deals that much damage plus 1 to that permanent or player instead.

Haste

: Flowstone Hellion gets +1/-1 until end of turn.

Sacrifice all creatures you control, then create that many 4/4 red Hellion creature tokens.

Haste

Iron-Barb Hellion can't block.

Assist (Another player can pay up to of this spell's cost.)

Trample, haste

Reach

Disguise (You may cast this card face down for as a 2/2 creature with ward . Turn it face up any time for its disguise cost.)

Volcano Hellion has echo , where X is your life total. (At the beginning of your upkeep, if this came under your control since the beginning of your last upkeep, sacrifice it unless you pay its echo cost.)

When Volcano Hellion enters, it deals an amount of damage of your choice to you and target creature. The damage can't be prevented.