The Immortal Weapons 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

When The Immortal Weapons enter, return target instant or sorcery card from your graveyard to your hand. Whenever you cast a noncreature spell, target creature gets +2/+0 and gains menace until end of turn. (It can't be blocked except by two or more creatures.)

Complete guide

The Immortal Weapons is a powerful legendary creature that bridges the gap between spellcasting and combat prowess. By recovering resources from your graveyard and buffing your attackers, this Human Warrior Hero serves as a potent finisher for aggressive red decks.

Mastery of Spells and Steel

The Immortal Weapons features two distinct abilities. First, its enters-the-battlefield ability provides immediate card advantage by returning an instant or sorcery from your graveyard to your hand. Second, it possesses a repeatable triggered ability that rewards you for casting noncreature spells by granting a target creature +2/+0 and menace until the end of the turn.

Resolving the Triggers

When The Immortal Weapons enters the battlefield, you must choose a legal target for its first ability immediately. If there are no instant or sorcery cards in your graveyard, the ability is simply removed from the stack. For the second ability, the bonus triggers as soon as you cast a noncreature spell—this means the buff resolves before the spell that triggered it actually takes effect.

Strategic Timing

To maximize the value of The Immortal Weapons, ensure your graveyard is populated with impactful spells before casting it. Since the menace and power buff can be applied to any creature, including itself, you can use cheap noncreature spells during your combat phase to make your board significantly harder to block.

Common Pitfalls

Remember that the second ability only triggers on 'casting' a spell; copying a spell on the stack will not trigger the +2/+0 bonus. Additionally, you must have a legal target for the power buff when the trigger is put on the stack, or the ability will fail to resolve.

Interaction examples

Doubling Down on Heroics

Roaming Throne

If you control Roaming Throne and chose 'Human' or 'Warrior' as it entered, The Immortal Weapons will trigger twice. When it enters, you return two spells from your graveyard to your hand. Later, every time you cast a noncreature spell, the +2/+0 and menace ability triggers twice, allowing you to give one creature +4/+0 or split the bonuses between two different creatures.

Artifact Synergy

Solemn Simulacrum

Note that casting Solemn Simulacrum will not trigger the second ability of The Immortal Weapons because the Simulacrum is a creature spell. However, you can use the extra land fetched by the Simulacrum to help pay the 5-mana cost for The Immortal Weapons, ensuring you have the resources to follow up with noncreature spells for combat buffs.

Self-Buffing for the Win

If The Immortal Weapons is your only creature, you can target it with its own trigger. By casting a simple sorcery, this 5-mana creature becomes a 7-power threat with menace, forcing your opponent to commit at least two blockers to stop it.

Guide written with AI from the official text and rulings. Official English text prevails.