Elsha of the Infinite

Mana cost: {2}{U}{R}{W}
Type: Legendary Creature — Djinn Monk
Power / toughness: 3 / 3
Set: Double Masters 2022 #208 (rare)
Price: $0.56 USD

Prowess (Whenever you cast a noncreature spell, this creature gets +1/+1 until end of turn.)
You may look at the top card of your library any time.
You may cast noncreature spells from the top of your library. If you cast a spell this way, you may cast it as though it had flash.

Elsha of the Infinite has 4 printings, first in Commander 2019 (2019). EDHREC ranks it #6,953 among Commander cards. It appears most in Narset, Enlightened Exile decks (3,569 on EDHREC). 1 public deck on TCG runs it. It has 3 official rulings.

Legality

commander: legal
legacy: legal
vintage: legal
pauper: not legal
modern: not legal
pioneer: not legal
standard: not legal
brawl: not legal

Public decks that run Elsha of the Infinite

Mystic Intellect - Commander 2019, led by Sevinne, the Chronoclasm

Commanders that run Elsha of the Infinite most

Deck counts from EDHREC.

Often played with Elsha of the Infinite

Cards that show up in the same decks on EDHREC.

Rulings

2019-08-23: You'll still pay all costs for a spell you cast from your library, including additional costs. You may also pay alternative costs.
2019-08-23: Elsha lets you look at the top card of your library whenever you want (with one restriction—see below), even if you don't have priority. This action doesn't use the stack. Knowing what that card is becomes part of the information you have access to, just like you can look at the cards in your hand.
2019-08-23: If the top card of your library changes while you're casting a spell, playing a land, or activating an ability, you can't look at the new top card until you finish doing so. This means that if you cast the top card of your library, you can't look at the next one until you're done paying for that spell.