Single Strike Urn of vitality and Houndoom do not work with impact energy

FoxxIf

I came across a bug where you can not accelerate single strike impact energy with houndoom, likewise you can not get the energy back in the deck with the urn of vitality. I'm pretty sure this is incorrect because I was using a rapid strike deck and I was able to use Octillery to get a rapid strike spiral energy card from my deck.

squibix

It's working as intended, because of the precise wording on the cards. I posted a longer explanation but it was held up in moderation.

TechHog

Unfortunately, this is not a bug. The way that the cards are worded mean that they only work with a card with the exact name "Single Strike Energy." They don't work with Impact Energy.

Edurandomnumber

I know the wording is weird, but both houndoom and urn of vitality only work with cards name "single strike energy" not with energies with the single strike logo.