This isn't a real rule, but then, you can't revive part of a fusion monster in the real game, either
Lack of saproling synergy does edge this out of a bunch of green decks as well as being just a token producer so high up the curve
Like Fusion Monsters, some Synchro Monsters need specific materials, other can use more general materials
In some rare cases, you can have a token or a copy of a spell in your graveyard at the moment that an object's delirium ability counts the card types among cards in your graveyard, before that token or copy ceases to exist
To sell Pokmon cards on TCGplayer, simply list your cards on the TCGplayer marketplace, set your prices, and wait for potential buyers to purchase them