2 cards where the name includes “howl” and the text includes “creatures” and the text includes “with” and the text includes “power” and the text includes “less” and the text includes “than” and the text includes “power” and the text includes “can't” and the text …

Howlgeist (Avacyn Restored #182)

Howlgeist {5}{G}

Creature — Spirit Wolf

Creatures with power less than Howlgeist’s power can’t block it.

Undying (When this creature dies, if it had no +1/+1 counters on it, return it to the battlefield under its owner’s control with a +1/+1 counter on it.)

4/2

Illustrated by David Rapoza

Standard
Alchemy
Pioneer
Explorer
Modern
Historic
Legacy
Brawl
Vintage
Timeless
Commander
Pauper
Oathbreaker
Penny
Shrill Howler // Howling Chorus (Eldritch Moon #168)
Shrill Howler // Howling Chorus (Eldritch Moon #168)

Shrill Howler {2}{G}

Creature — Werewolf Horror

Creatures with power less than Shrill Howler’s power can’t block it.

{5}{G}: Transform Shrill Howler.

“A werewolf’s howl is terrifying, to be sure. But this … this was a chilling sound I somehow felt. I fear what will reply to it.”
—Alena, trapper of Kessig

3/1

Howling Chorus

Creature — Eldrazi Werewolf

Creatures with power less than Howling Chorus’s power can’t block it.

Whenever Howling Chorus deals combat damage to a player, create a 3/2 colorless Eldrazi Horror creature token.

3/5

Illustrated by Matt Stewart

Standard
Alchemy
Pioneer
Explorer
Modern
Historic
Legacy
Brawl
Vintage
Timeless
Commander
Pauper
Oathbreaker
Penny

Their mind whirled with grand plans, never thinking of what might happen if they got to the end of the list.