pokemon gym leaders booster packs Japanese Leaders' Stadium Box 126 new cards Gym Heroes (TCG) - Bulbapedia,

(2006-10-15) This ability has an "intervening 'if' clause." That means (1) the ability won't trigger at all unless any one of your opponents controls more lands than you, and (2) the ability will do nothing if you control at least as many lands as each of your opponents by the time it resolves

Charred Foyer // Warped Space Charred Foyer Three generic, one red enchantment Room Mythic Rare (You may cast either half

If you're looking for a more modestly priced option, lightly played (LP) cards drop to about $30, while moderately played (MP) cards sell for roughly $25 on average

There is something to be said for Necropotence, but be aware that it is another of those cards which will put a target on you quickly