Elder Entity N'tss [CT14-EN009] Super Rare Skill/Continuous Spell You can only use each

You can only use each effect of "Keeper of Dragonic Magic" once per turn

change it to Attack Position at the end of the Damage Step

destroy all cards your opponent controls

but its ATK and DEF becomes 1000

Elder Entity N'tss [CT14-EN009] Super Rare Skill/Continuous Spell You can only use eachSet: 2017 Mega Tins Card type: Fusion Effect Monster Rarity: Super Rare Attack: 2500 Defense: 1200 1 Synchro Monster + 1 Xyz Monster Must be Special Summoned (from your Extra Deck) by sending the above cards you control to the GY. (You do not use "Polymerization".) Once per turn: You can Special Summon 1 Level 4 monster from your hand. If this card is sent to the GY: You can target 1 card on the field; destroy it. You can only Special Summon "Elder