Tiamat
Legendary Creature — Dragon God{2}{W}{U}{B}{R}{G}7/7
Flying When Tiamat enters, if you cast it, search your library for up to five Dragon cards not named Tiamat that each have different names, reveal them, put them into your hand, then shuffle.
Colour identity Five-color · Flying · Commander page
In short
Tiamat has 7 listed printings; the most valuable is the printing from PAFR at US$209.99 on TCGplayer's market price. Prices below are the cheapest in-stock listing in the United States.
Every Tiamat printing
Tiamat
PAFR · 235a
TCGplayer market
US$209.99
Showcase · Secret Lair
Tiamat
SLD · 1017
TCGplayer market
US$102.13
Prerelease
Tiamat
PAFR · 235s
TCGplayer market
US$50.96
Borderless
Tiamat
AFR · 298
TCGplayer market
US$38.49
Promo Pack
Tiamat
PAFR · 235p
TCGplayer market
US$25.60
The List
Tiamat
PLST · AFR-235
TCGplayer market
US$23.78
Tiamat
AFR · 235
TCGplayer market
US$21.08