The PM DP Winter Special is to be at least a 2-parter.
Both episodes will broadcast in Japan on December 3rd, 2021
PM0??? Dialga & Palkia! The Space-time Abnormality!!" & PM0??? "Dialga & Palkia! The Decisive Space-time Battle!!"
Yeah. That's actually what Critias does in the TCG, too. xD
The Fang of Critias said:
Send 1 Trap from your hand or field to the GY, that is listed on a Fusion Monster that can only be Special Summoned with "The Fang of Critias" (if that card is Set, reveal it), then Special Summon that Fusion Monster from your Extra Deck. You can only activate 1 "The Fang of Critias" per turn.