Echoing Echo [Unknown Event] WTR174-R You can Summon it with

You can Summon it with a new Spell Card that lets you Fusion Summon by discarding cards

they lose 2 life

−1: Destroy target artifact or enchantment

Set: World Championships 2011 Type: Su Rarity: Uncommon

You can target 1 other "Number" Xyz Monster you control

Echoing Echo [Unknown Event] WTR174-R You can Summon it withSet: Unknown Event Type: Sorcery Rarity: Common Cost: {W} Target creature and all creatures that share a name with that creature gain echo 3 until the end of your next turn. (At the beginning of the upkeep of each of those creature's controllers, if that creature came under its owner's control since the beginning of their last upkeep, they sacrifice it unless they pay its echo cost.