Hybrid mana symbols, monocolored hybrid mana symbols, and Phyrexian mana symbols do count toward your devotion to their color(s)
Use the cantrips to set up your early turns (and occasionally plan out a timely Miracle Temporal Mastery), Spreading Seas to slow them down, hopefully flash in Dictate of Kruphix on their end step, untap and hold up Cryptic Command or Gigadrowse, and then cast Time Warp on Turn 5 and never pass the turn back to them
That would be really lame in the current meta
[Counter] Your Leader gains +4000 power during this battle
For example, take a look at a few from the Fusion Strike expansion that was released in November 2021
We always make sure that we know about the new upcoming releases long in advance, that way you can already pre-order the new Pokemon packs