Mana Echoes [Onslaught] 171 If this card is destroyed

If this card is destroyed

and it cannot be used as a Synchro Material Monster

Set: Gladiator's Assault Card type: Fusion/Effect Monster Rarity: Ultimate Rare Attack: 2100 Defense: 1200 "Elemental Hero Avian" + "Elemental Hero Burstinatrix" This monster cannot be Special Summoned except with ""Dark Fusion""

Set: Dark Beginning 1 Card type: Normal Spell Rarity: Super Rare Destroy 1 face-down monster and remove it from play

you can discard 1 DARK monster to send 1 DARK monster from your Deck to your Graveyard

Mana Echoes [Onslaught] 171 If this card is destroyedSet: Onslaught Type: Enchantment Rarity: Rare Cost: {2}{R}{R} Whenever a creature enters the battlefield, you may add an amount of {C} equal to the number of creatures you control that share a creature type with it. When the ground is saturated with mana, even the lightest footstep can bring it to the surface.