Bitter Feud [Commander 2014] SV102 You can only use each

You can only use each effect of "Fabled Andwraith" once per turn

When you Ritual Summon a monster

Set: XY: Generations Type: Fire Rarity: Ultra Rare Retreat cost: Colorless

4+: You can remove from play 1 Reptile-Type monster from your Graveyard to send 1 monster on the field to the Graveyard

Bitter Feud [Commander 2014] SV102 You can only use eachSet: Commander 2014 Type: Enchantment Rarity: Rare Cost: {4}{R} As Bitter Feud enters the battlefield, choose two players. If a source controlled by one of the chosen players would deal damage to the other chosen player or a permanent that player controls, that source deals double that damage to that player or permanent instead.