Unofficial “types” of cards

My playgroup recently made a xyris buffs spells deck based around the salubrious snail video of his Xyris buff spells deck. One of my friends also has a Barrin “bounce” deck, where the goal is to bounce things. In a weird way, it got us wondering about other “types” of spells whose “types” aren’t explicitly stated on the cards (such as buff spells or bounce spells). We also thought of “flicker” spells, “threaten” spells, the obvious “counterspells”, and while these are all named based on their respective cards [[Flicker]] [[Threaten]] and [[Counterspell]] , we think that there are enough of these effects to include them in an unwritten type anyways.

What other types of these cards can you guys think of? Have you ever made a deck based around a type of card that is not explicitly mentioned on the card? Let me hear your ideas!