Arc of the Sealed Immortal and the immortal sealed within

[I Hate Snatch Steal]

I got this idea from how when number C101 is first summoned it looks like it was sealed within number 101

 

 

2 Level 8 monsters
You can detach 1 Xyz Material from this card; draw 1 card. You can only use the effect of "Arc of the Sealed Immortal" once per turn. If this card in its owner's possession is destroyed while it has Xyz Material: You can Special Summon 1 "Immortal Dark Knight" from your Extra Deck and attach the top card of your Graveyard to it as an Xyz Material. (This Special Summon is treated as an Xyz Summon.)

 

 

3 Level 9 monsters
Once per turn: you can attach 1 card from your hand to this card as an xyz material. Once per turn: you can target 1 face-up card; destroy that target. If this card is sent to the Graveyard while it has Xyz Material: You can Special Summon this card from your Graveyard, then gain 1000 Life Points and all face-up monsters your opponent currently controls lose 1000 ATK and DEF.