Strip Mine (Leon Lindback) [Pro Tour Collector Set] Betrayers of Kamigawa Promos Set: Urza's Legacy Promos Type:

Set: Urza's Legacy Promos Type: Artifact Creature — Golem Rarity: Rare Cost: {6} Beast of Burden's power and toughness are each equal to the number of creatures on the battlefield

or triggered ability

Set: Invasion Type: Instant Rare Cost: {2}{U} Change the text of target spell or permanent by replacing all instances of one color word with another or one basic land type with another until end of turn

Set: Invasion Type: Enchantment Rare Cost: {1}{G}{W} No more than one creature can attack each combat

but if it switches it won't be able to switch back

Strip Mine (Leon Lindback) [Pro Tour Collector Set] Betrayers of Kamigawa Promos Set: Urza's Legacy Promos Type:Set: Pro Tour Collector Set Type: Land Rarity: Uncommon {T}: Add {C}. {T}, Sacrifice Strip Mine: Destroy target land. Unlike previous conflicts, the war between Urza and Mishra made Dominia itself a casualty of war.