Mulldrifter

Mana cost: {4}{U}
Type: Creature — Elemental
Power / toughness: 2 / 2
Set: Friday Night Magic 2009 #6 (rare)

Flying
When this creature enters, draw two cards.
Evoke {2}{U} (You may cast this spell for its evoke cost. If you do, it's sacrificed when it enters.)

Mulldrifter has 34 printings, first in Lorwyn (2007). EDHREC ranks it #606 among Commander cards. It appears most in Ashling, the Limitless decks (24,923 on EDHREC). 12 public decks on TCG run it. It has 2 official rulings.

Legality

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

Public decks that run Mulldrifter

Dance of the Elements - Lorwyn Eclipsed Commander Deck, led by Ashling, the Limitless
Devour for Power - Commander 2011, led by The Mimeoplasm
Devour for Power - Commander Anthology Volume II, led by The Mimeoplasm
Dungeons of Death - Forgotten Realms Commander, led by Sefris of the Hidden Ways
Enchantress Rubinia - Magic Online Theme Decks, led by Rubinia Soulsinger
Enhanced Evolution - Commander 2020, led by Otrimi, the Ever-Playful
Peer Through Time - Commander 2014, led by Teferi, Temporal Archmage
Phantom Premonition - Kaldheim Commander, led by Ranar the Ever-Watchful
Reap the Tides - Commander Legends, led by Aesi, Tyrant of Gyre Strait
Revenant Recon - Murders at Karlov Manor Commander, led by Mirko, Obsessive Theorist
Subjective Reality - Commander 2018, led by Aminatou, the Fateshifter
Swell the Host - Commander 2015, led by Ezuri, Claw of Progress

Commanders that run Mulldrifter most

Deck counts from EDHREC.

Often played with Mulldrifter

Cards that show up in the same decks on EDHREC.

Rulings

2021-03-19: To determine the total cost of a spell, start with the mana cost or alternative cost you're paying (such as an evoke cost), add any cost increases, then apply any cost reductions. The mana value of the spell is determined by only its mana cost, no matter what the total cost to cast that spell was.
2021-03-19: If you pay the evoke cost, you can have Mulldrifter's own triggered ability resolve before the evoke triggered ability. You can cast spells after that ability resolves but before you have to sacrifice Mulldrifter.