2 Level 7 Dragon monsters
If this card is Xyz Summoned: You can target 1 Level 4 or lower «Dragon Ruler» monster in your GY or banishment; Special Summon 1 Level/Rank 7 «Dragon Ruler» monster that is mentioned on that targeted monster from your Deck or banishment, then shuffle the targeted monster into the Deck. When your opponent activates a Spell/Trap Card or effect (Quick Effect): You can detach 2 materials from this card; negate the activation, and if you do, banish that card. You can only use each effect of «Eclipse, Dragon Ruler of Catastrophes» once per turn.