Shuffling a card away is the best kind of removal there is, as it becomes much harder to retrieve that resource back and gets around cards that can't be Destroyed
But over the past few months, thanks to a boom in interest, the Pokemon Trading Card Game hobby has been plagued by scalpers emptying store shelves, then asking for double and triple the price on the resale market like on eBay
Notably, players can't try to save their creatures after you've chosen a creature type
But unless your deck is already geared toward other strategies that also take advantage of these cards, trying to refill a spent Iceberg is gimmicky at best, and an inefficient use of mana at worst
This, in combination with the large amount of healing, can be too much for some decks to overcome, so running max counts of Heat R Energy is very good
An Old Friend Returns Recommission is also a great way to revive one of the more notorious cards in the deck: Cori-Steel Cutter