Fell Beast of Mordor is one of those cards players keep asking about. Here is, in plain words, what its official text says, the rulings published by Wizards of the Coast, and the combos players actually run.
Official card text
Flying Devour 1 (As this creature enters, you may sacrifice any number of creatures. It enters with that many +1/+1 counters on it.) Whenever this creature enters or attacks, target opponent loses X life and you gain X life, where X is the number of +1/+1 counters on it.
Complete guide
The Fell Beast of Mordor is a terrifying aerial threat that scales in power by consuming your own forces. By utilizing the Devour mechanic, this creature transforms your smaller units into a life-draining engine that punishes opponents every time it enters the fray or swings for combat.
Understanding Devour 1
Devour is a static ability that functions as the creature enters the battlefield. As Fell Beast of Mordor enters, you choose any number of creatures you currently control and sacrifice them. For each creature sacrificed this way, Fell Beast of Mordor enters with one +1/+1 counter. Note that because this happens as it enters, you cannot sacrifice other creatures that are entering at the exact same time as the Fell Beast.
Resolving the Life Drain
Fell Beast of Mordor has a triggered ability that fires off twice: once when it enters the battlefield and again every time it is declared as an attacker. When the ability resolves, it checks the number of +1/+1 counters currently on the beast. A target opponent loses that much life, and you gain that much life. If the Fell Beast is destroyed in response to this trigger, the game uses 'Last Known Information' to check how many counters it had before it left the battlefield.
Timing and Strategy
To maximize this card, you should aim to have several expendable creatures ready before casting it. Since the drain trigger happens on both entry and attack, keeping the Beast alive is your top priority. It provides an immediate swing in life totals that can bypass blockers entirely, making it a potent finisher in attrition-based decks.
Interaction examples
You cast Fell Beast of Mordor. As it enters, you sacrifice Solemn Simulacrum to the Devour ability. The Beast enters with one +1/+1 counter. Simultaneously, the Simulacrum's death trigger and the Beast's entry trigger go on the stack. You draw a card, your opponent loses 1 life, and you gain 1 life.
With Roaming Throne on the battlefield naming 'Drake' or 'Beast', you cast Fell Beast of Mordor and sacrifice two other creatures. Because of the Throne, the Beast's entry ability triggers twice. Each trigger will see two +1/+1 counters, resulting in the opponent losing 2 life then another 2 life (4 total), and you gaining 4 life.
If you cast Fell Beast of Mordor onto an empty board, you cannot sacrifice anything. It enters as a 3/3 with no counters. Its entry ability still triggers, but since X is 0, no life is lost or gained. You will need to find other ways to put +1/+1 counters on it later to make its attack trigger effective.
Guide written with AI from the official text and rulings. Official English text prevails.
How it works : Fell Beast of Mordor
Original English text — Wizards of the Coast / Scryfall
- #1· Wizards of the Coast
Fell Beast of Mordor can't devour creatures entering the battlefield at the same time as it.
No other card is named in this ruling.
- #2· Wizards of the Coast
If Fell Beast of Mordor isn't on the battlefield as its ability resolves, use the number of +1/+1 counters that were on it when it was last on the battlefield to determine the value of X.
No other card is named in this ruling.
Legal formats
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Meta decks with Fell Beast of Mordor
No archived Top 8 deck with this card yet.



Solemn Simulacrum
Roaming Throne