Frenetic Efreet (Mirage) - Thomas Gianni

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Frenetic Efreet (Mirage) - Thomas Gianni
Frenetic Efreet
Artist: Thomas Gianni TCG Player Link Scryfall Link EDHREC Link
Can you use the effect of Frenetic Efreet infinite times, and still resolve the coin flips even after it phases out?
You can't do anything infinite times in Magic, just an arbitrarily large number of times. In the situation you describe, you can hold priority and activate Frenetic Efreet a bunch of times before letting any of the activations resolve. Frenetic Efreet's ability doesn't specify that it has to be on the battlefield for the coin to be flipped, so you'll still get to flip all of those coins no matter what happens on the first flip.(In this case, I would recommend simulating the flips with a random number generator rather than forcing your opponent to sit through a billion and a half coin flips.)
Reserve List: Spike of the Day
Battlebond edition!
Someone opened a prerelease pack early and unofficially spoiled the UR legendary partners. I won't link to the photo but I will say that coins get flipped. With that in mind, here is the spike of the day:
This card is terrible. Coin flips and phasing means it's difficult to kill but as a 2/1 it's not an imposing threat. This wasn't always the case. This was basically the aetherling of its time and was featured in this 1997 Worlds 2nd place deck for standard.
By modern standards, however, it is pretty bad. It's too slow for legacy or EDH. It is not legal in old school and while it might see play in the Premodern format, I doubt it.
It's round 1, game 1 of a high-profile legacy tournament and I'm running the famous metagame-dominating combo deck, Chance Encounter/Frenetic Efreet. With both cards in play, at the end of my opponent's turn, I announce that I'm activating Frenetic Efreet "a million times". Can I offer a shortcut to my upkeep? If my opponent doesn't concede and doesn't accept the shortcut even after ten successful flips, do I have to either concede or go to time while I flip a million coins?
You CAN’T shortcut this, sadly. There’s a chance, albeit a vanishingly slim one, that you just won’t ever win 10 flips. I’d recommend just activating it something reasonable like 30 times where you chances of winning 10 flips is still very good.
I played around with this binomial distribution toy I found, and with 30 flips, you have less than a 5% chance on average of not getting 10 wins.