Sentry Oak

Creature - Treefolk Warrior 3/5, 4W (5)
Defender
At the beginning of combat on your turn, you may clash with an opponent. If you win, Sentry Oak gets +2/+0 and loses defender until end of turn. (Each clashing player reveals the top card of his or her library, then puts that card on the top or bottom. A player wins if his or her card had a higher converted mana cost.)¹
Illus. Warren Mahy

Crystal Keep Rulings Summaries

• Note - Also see Clash, Rule 501.10.
• Note - Also see Defender, Rule 502.41.

Format Legality	Legal in Vintage, Legacy, Extended, Standard
Printings (1/9)	Lorwyn (Uncommon)