A new Wyrm appears that gains immortality if there’s other revived monsters!

DAMA-JP046 告天子竜パイレン DAMA-JP046 Koutenshiryuu Pairen (Pairen the Skylark Dragon)
Rank 6 WIND Wyrm Xyz Effect Monster
ATK 2700
DEF 1300
Materials: 2 Level 6 monsters
You can only use this card name’s 2nd effect once per turn.
(1) Cannot be destroyed by battle or card effect while a monster Special Summoned from the GY other than “Pairen the Skylark Dragon” is face-up on the field.
(2) Once per turn, during the Standby Phase: You can detach 1 material from this card, then target 1 Level 5 or lower monster in your GY; Special Summon it.

Source