It was brought up yesterday in one of my teams matches at GCC that if a card refrences a "card that you could play normally" (::Dhalsim:: for example), that you couldn't use it for a card that only has the infinity symbol. I can't remember the specifics on why this was brought up, since it wasn't me that was doing it (I think he was trying to bring something up as a block, and I was wondering why he didn't pull a Lynette's. Maybe), so the fact that he was limiting himself with a ruling that I had never heard didn't really upset me at all, but it did get me wondering.

The reason presented was that infinity wasn't a symbol on your character, so you can't actually play it, except for the fact that whenever you reveal it to play it, you declare the symbol that it will be. Is that correct?

You can play infinity cards this way. Infinity is technically a wildcard resource, so anyone CAN play it. If it's a situation like J.Talbain or Buddhist Devotion, you declare what resource it has when it enters play and it'll keep that resource.

to be even more specific, it's not a resource, and is a symbol used to designate that one resource must be chosen for it when it is to be played.

the question came up when someone had tried to use billiard player to pull a seal of cessation to their staging area, since our local scout explained that since the infinity symbol is declared as a symbol when it comes into play or is being attempted to be played.

since billiard player targets a card in the discard pile that you could play normally, we had concluded that since its not a resource you can play as it is you cant target the card for the ability

well... that's wrong.

there's never a time you can't play an infinity card. the only situation i can think of is if there's a card in the card pool, and another card gets placed into your card pool that breaks the resource chain - but then nothing can be played at that point, not just infinity cards.