Frenetic Efreet 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 : Flip a coin. If you win the flip, this creature phases out. If you lose the flip, sacrifice this creature. (While it's phased out, it's treated as though it doesn't exist. It phases in before you untap during your next untap step.)

Complete guide

Frenetic Efreet is a classic Magic: The Gathering creature that brings the chaos of coin-flipping to the battlefield for zero mana. This blue and red Efreet offers a high-stakes gamble where the reward is temporary invulnerability and the cost is the permanent loss of the creature. Understanding how its ability stacks and interacts with the phasing mechanic is key to mastering this unpredictable flier.

A Zero-Cost Gamble

Frenetic Efreet has an activated ability that costs nothing to activate, meaning you can put its coin-flip effect on the stack as many times as you like in a single turn. When the ability resolves, you flip a coin; winning the flip causes it to phase out, while losing the flip forces a sacrifice. Because it is a 0-cost ability, players often activate it multiple times in response to itself to ensure the Efreet leaves the battlefield before a removal spell can resolve.

How Phasing Works

When Frenetic Efreet phases out, it is treated as though it doesn't exist for all game purposes, including its presence on the board and its status as a permanent. It remains in this state until your next untap step, at which point it phases back in before you untap your permanents. Crucially, phasing out does not trigger 'leaves the battlefield' abilities, and phasing in does not trigger 'enters the battlefield' abilities, as the card never truly changes zones.

Resolving the Ability Step by Step

Once you activate the ability, it goes on the stack. If you choose to activate it multiple times, each flip resolves individually. If the Efreet is sacrificed due to a lost flip, any remaining activations on the stack still resolve, but they will fail to do anything because the Efreet is no longer on the battlefield. Similarly, if the Efreet phases out, it is no longer on the battlefield to be sacrificed if you lose subsequent flips on the stack.

Interaction examples

Survival Against Removal

If an opponent targets Frenetic Efreet with a destruction spell, you can activate its ability in response. If you win the flip, the Efreet phases out. Because it no longer exists for game purposes, the opponent's spell will lose its target and fail to resolve. If you lose the flip, the Efreet is sacrificed immediately, which still denies your opponent the satisfaction of their spell resolving.

Type Selection and Interaction

Roaming Throne

If Roaming Throne enters the battlefield and you choose 'Efreet', it will not affect Frenetic Efreet's coin-flip ability. This is because Frenetic Efreet's ability is an activated ability (indicated by the colon), and Roaming Throne only interacts with triggered abilities (starting with 'When', 'Whenever', or 'At').

Missing the Trigger

Solemn Simulacrum

If you control both creatures and choose to phase out your Frenetic Efreet, it simply disappears and reappears later. Unlike Solemn Simulacrum, which has a triggered ability that happens when it dies or enters, the Efreet's phasing does not count as entering or leaving the battlefield. Therefore, you cannot use phasing to repeat 'enters the battlefield' effects like searching for a land.

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