The Hobbit

Creature — Wolf

Menace (This creature can't be blocked except by two or more creatures.)
Ferocious — Whenever this creature attacks while you control a creature with power 4 or greater, this creature gets +2/+2 until end of turn.

Nighthowl Pursuer

Deathtouch
Ferocious — Whenever this creature attacks while you control a creature with power 4 or greater, you gain 2 life.

Ravening Warg

Creature — Rabbit

Ferocious — At the beginning of combat on your turn, if you control a creature with power 4 or greater, put a +1/+1 counter on this creature.

Nasty Little Rabbit

Ferocious — Whenever this creature attacks while you control a creature with power 4 or greater, until end of turn, this creature gets +1/+0 and creatures you control gain trample.

Wargling

Ferocious — Whenever this creature attacks while you control a creature with power 4 or greater, put a +1/+1 counter on each creature you control.

Wilderland Scrounger

Legendary Creature — Wolf

Menace (This creature can't be blocked except by two or more creatures.)
Ferocious — Whenever you attack while you control a creature with power 4 or greater, you draw a card and lose 1 life.

The Chief Warg

Secrets of Strixhaven Mystical Archive

Sorcery

Draw a card for each creature you control.
Ferocious — You gain 4 life for each creature you control with power 4 or greater.

Shamanic Revelation

Foundations Promos

Creature — Phoenix

Flying, haste
This creature attacks each combat if able.
Ferocious — At the beginning of combat on your turn, if you control a creature with power 4 or greater, you may pay {R}. If you do, return this card from your graveyard to the battlefield.

Flamewake Phoenix

Foundations Commander

Creature — Human Shaman

{T}: Add {G}.
Ferocious — {T}: Add {G}{G}. Activate only if you control a creature with power 4 or greater.

Whisperer of the Wilds

Modern Horizons 3 Tokens

Fanatic of Rhonas

Token Creature — Zombie Snake Druid

{T}: Add {G}.
Ferocious — {T}: Add {G}{G}{G}{G}. Activate only if you control a creature with power 4 or greater.

Modern Horizons 3 Promos

Creature — Snake Druid

{T}: Add {G}.
Ferocious — {T}: Add {G}{G}{G}{G}. Activate only if you control a creature with power 4 or greater.
Eternalize {2}{G}{G} ({2}{G}{G}, Exile this card from your graveyard: Create a token that's a copy of it, except it's a 4/4 black Zombie Snake Druid with no mana cost. Eternalize only as a sorcery.)

Commander Masters

Instant

Target creature gains double strike until end of turn.
Ferocious — That creature also gains trample until end of turn if you control a creature with power 4 or greater.

Temur Battle Rage

Jumpstart 2022

Creature — Elephant

Ferocious — This creature enters with a +1/+1 counter on it if you control a creature with power 4 or greater.

Frontier Mastodon

All creatures able to block target creature this turn do so.
Ferocious — That creature gains indestructible until end of turn if you control a creature with power 4 or greater.

Roar of Challenge

Target creature you control fights target creature you don't control.
Ferocious — The creature you control gets +2/+2 until end of turn before it fights if you control a creature with power 4 or greater.

Savage Punch

Pioneer Challenger Decks 2021

Ferocious — If you control a creature with power 4 or greater, damage can't be prevented this turn.
Wild Slash deals 2 damage to any target.

Wild Slash

The List

Barrage of Boulders deals 1 damage to each creature you don't control.
Ferocious — If you control a creature with power 4 or greater, creatures can't block this turn.

Barrage of Boulders

You gain 5 life.
Ferocious — You gain 10 life instead if you control a creature with power 4 or greater.

Feed the Clan

Secret Lair Drop

Counter target noncreature spell unless its controller pays {1}.
Ferocious — If you control a creature with power 4 or greater, counter that spell instead.

Stubborn Denial

Fate Reforged Promos

Creature — Orc Shaman

Haste
Whenever a creature you control deals combat damage to a player, put a +1/+1 counter on it.
Ferocious — {2}{G/U}{G/U}: Draw a card for each creature you control with power 4 or greater.

Shaman of the Great Hunt

Fate Reforged

Prevent all combat damage that would be dealt this turn.
Ferocious — If you control a creature with power 4 or greater, instead prevent all combat damage that would be dealt this turn by creatures your opponents control.

Winds of Qal Sisma

Khans of Tarkir Promos

Tap X target creatures.
Ferocious — If you control a creature with power 4 or greater, those creatures don't untap during their controllers' next untap steps.

Icy Blast

Crater's Claws deals X damage to any target.
Ferocious — Crater's Claws deals X plus 2 damage instead if you control a creature with power 4 or greater.

Crater's Claws

Creature — Human Warrior

Deathtouch
Ferocious — Whenever this creature attacks, if you control a creature with power 4 or greater, this creature gets +1/+1 until end of turn.

Heir of the Wilds

Khans of Tarkir

Return target creature to its owner's hand.
Ferocious — If you control a creature with power 4 or greater, you may draw a card. If you do, discard a card.

Force Away

Enchantment — Aura

Ferocious — If you control a creature with power 4 or greater, you may cast this spell as though it had flash. (You may cast it any time you could cast an instant.)
Enchant creature
Enchanted creature gets +2/+0 and has first strike.

Dragon Grip

Reveal the top eight cards of your library. You may put a creature card from among them onto the battlefield. Put the rest into your graveyard.
Ferocious — If you control a creature with power 4 or greater, you may put two creature cards onto the battlefield instead of one.