Megrim [Magic 2010] SV57 if you control no monsters:

if you control no monsters: You can target 1 "Ancient Gear" monster in your Graveyard

Set: Dimension of Chaos Card type: Normal Trap Rarity: Ultra Rare Tribute 1 WIND Spellcaster-Type monster

up to the number of cards your opponent controlled that were sent to the Graveyard by this card's effect

Set: Commander Anthology Volume II Type: Artifact Rarity: Common Cost: {2} When Ichor Wellspring enters the battlefield or is put into a graveyard from the battlefield

or Xyz Monster If this card is Special Summoned: You can target 1 Ritual

Megrim [Magic 2010] SV57 if you control no monsters:Set: Magic 2010 Type: Enchantment Rarity: Uncommon Cost: {2}{B} Whenever an opponent discards a card, Megrim deals 2 damage to that player. "It's a vicious circle. Stress breeds pain. Pain breeds stress. It's simply beautiful, wouldn't you agree?" Vradeen, vampire nocturnus