Aggron MT's Heap Up.

[Shadow Zangoose]

Me and a friend of mine were having a little debate on the Heap Up attack Aggron MT has. He thinks it shuffles ALL the energy you show to your opponent back into the deck, while i think it only shuffles in Special Metal Energy cards.

The card in question

Thanks in advance for the answer.

 

[PokePop]

It says "all" get shuffled in. So that would be all.