Solgaleo ex Solgaleo ex is the powerful heavy hitter that Metal-type decks have been waiting for, and with Rare Candy making it actually viable to play Stage 2 cards now, its definitely worth considering building a deck around it
I think a reasonable comparison might be to Deathrite Shaman, in terms of just how disproportionately impactful it is for its cost, as well as in flexibility
They dont offer any benefits in-game and are only to show off
Special Darkness & Special Metal Energy: Starting in 2007, Metal and Darkness Pokmon received Basic Energy cards
Red Carpet X TRAP If a Dragon-Type Synchro Monster is on the field: Target up to 2 "Resonator" monsters in your Graveyard
Adventures in the Forgotten Realms , meanwhile, has even more references but in a more general sense