Karakas
 
Eternal Masters' slogan is "Draft outside time", and there are few cards that I find more relevant to that phrase than Karakas. In certain ways, time has changed a lot of things that relate to it. Few legendary creatures were used in competitive play in 1994, yet Karakas immediately caught people's attention. Legendary creatures were brand new, and lands with non-mana abilities had only been introduced in Arabian Nights, and the card's game text and the hazy view of the distant white tower made our minds spin with the possibilities. And as far as gameplay goes, it has exceeded anything we could have dreamed of at the time - it's one of the few on-table abilities that can deal with Emrakul. That alone makes it truly outside of time, one of the greatest cards from one of Magic's greatest expansions.
 
Constructed: 4/5
Casual: 4/5
Limited: 4/5
Multiplayer: 4/5
EDH/Commander: 5/5 when not (justifiably) banned