Kobold Overlord [Legends] Archenemy Set: Coldsnap Type: Enchantment Rare

Set: Coldsnap Type: Enchantment Rare Cost: {1}{R} Cumulative upkeep—Add {R}

Set: Mercadian Masques Type: Sorcery Rarity: Rare Cost: {4}{W} Each creature deals damage to itself equal to its power

Which tell us the way to go

Set: Friday Night Magic 2003 Type: Instant Rare Cost: {1}{W} Destroy target artifact or enchantment

It has "This creature's power and toughness are each equal to the number of experience counters you have

Kobold Overlord [Legends] Archenemy Set: Coldsnap Type: Enchantment RareSet: Legends Type: Creature Kobold Rare Cost: {1}{R} First strike Other Kobold creatures you control have first strike. "One for all, all for one; we strike first, and then you're done!" Oath of the Kobold Musketeers