Trebol.

What moves the price of this card

The Trebol on this page is the Normal printing from Royal Blood, and it trades at $0.04 in near mint condition. The same name is on 5 other printings: The Azure Sea's Seven Release Event Cards OP14-068 at $9.34, Kingdoms of Intrigue OP04-030 at $4.47, Royal Blood Release Event Cards OP10-070 at $0.33, Kingdoms of Intrigue OP04-030 at $0.13, The Azure Sea's Seven OP14-068 at $0.12, so read the set, the number and the rarity together before comparing prices.

Condition does most of the work below the surface. A copy with soft corners or a print line off centre trades well under the market price shown here, and a copy clean enough to grade trades well above it. Before you value your own copy, look at the corners under a light and check the centring on the back, where most cards give themselves away.