During the Main Phase, if this card is in your hand (Quick Effect): You can target 1 "Mannadium" monster you control or 1 monster you control with 1500 ATK/2100 DEF; destroy it, and if you do, Special Summon this card. If this card is Normal or Special Summoned: You can add 1 "Mannadium" card from your Deck to your hand, except "Mannadium Riumheart". You can only use each effect of "Mannadium Riumheart" once per turn.
![Mannadium Riumheart [MP24-EN079] Prismatic Secret Rare](http://trinitygamesllc.com/cdn/shop/files/ygo_placeholder_e1a16e81-9640-4790-aced-68d4868cd195.png?v=1726766450&width=1445)
![Mannadium Riumheart [MP24-EN079] Prismatic Secret Rare](http://trinitygamesllc.com/cdn/shop/files/579553.jpg?v=1727890012&width=1445)
![Mannadium Riumheart [MP24-EN079] Prismatic Secret Rare](http://trinitygamesllc.com/cdn/shop/files/579553_dab4f67a-6dcd-47c1-a20f-2f655e037ac5.jpg?v=1728082497&width=1445)
![Mannadium Riumheart [MP24-EN079] Prismatic Secret Rare](http://trinitygamesllc.com/cdn/shop/files/579553_3cc63a02-2d13-4857-9adf-9f10998c2341.jpg?v=1728491518&width=1445)