Felidar Sovereign
Creature — Cat Beast{4}{W}{W}4/6
Vigilance (Attacking doesn't cause this creature to tap.) Lifelink (Damage dealt by this creature also causes you to gain that much life.) At the beginning of your upkeep, if you have 40 or more life, you win the game.
Colour identity White · Lifelink, Vigilance
In short
Felidar Sovereign has 8 listed printings; the most valuable is the Secret Lair printing from SLD at US$82.91 on TCGplayer's market price. Prices below are the cheapest in-stock listing in the United States.
Every Felidar Sovereign printing
Secret Lair
Felidar Sovereign
SLD · 1182
TCGplayer market
US$82.91
Secret Lair · Rainbow Foil
Felidar Sovereign
SLD · 1827
TCGplayer market
US$16.90
Prerelease
Felidar Sovereign
PBFZ · 26s
TCGplayer market
US$12.01
Felidar Sovereign
ZEN · 12
TCGplayer market
US$5.00
Felidar Sovereign
BFZ · 26
TCGplayer market
US$4.44
Felidar Sovereign
PBFZ · 26★
TCGplayer market
US$4.29
The List
Felidar Sovereign
PLST · BFZ-26
Price not tracked
Felidar Sovereign
J25 · 198
TCGplayer market
US$3.54