Eriette, the Beguiler {1}{W}{U}{B}
Legendary Creature — Human Warlock
Identity
Esper
EDHREC rank
#15,113
Cheapest printing
US$0.23
TCGplayer
Printings
4
Lifelink
Whenever an Aura you control becomes attached to a nonland permanent an opponent controls with mana value less than or equal to that Aura's mana value, gain control of that permanent for as long as that Aura is attached to it.
Keywords: lifelink
Every printing
highest TCGplayer market first; a card with only a thin single listing shows its low
In short
A Commander deck is a commander and 99 other cards, one copy of each (except basic lands), all inside the commander's colour identity. Paste a full list into the deck price calculator to price it and check it against the format.