Temur Blastcat
Creature - Cat (R)
Whenever you cast a spell with this creature as it's only target, create a token copy of this creature, then copy that spell with that token as it's new target.
3/3

Temur Blazecat
Creature - Cat (R)
Haste
Whenever you cast a spell with this creature as it's only target, create a token copy of this creature, then copy that spell with that token as it's new target.
3/4

this is a really cool and innovative effect but i think the flavor kind of sucks

What does this do with auras? Does copying an aura spell make an aura token or should this just say "instant or sorcery"?

there's no precedent for copies of permanent spells. I think converting them into tokens makes sense (and have advocated for that interpretation for years) but as yet it's undefined. I think "instant or sorcery" is probably better here, though, 'cause aura tokens are messy.

on the card I like it but it really needs haste so that you can use it meaningfully with pump spells.

Feel free to ignore the flavor - I just could'nt come up with another cool, so went with random stub instead.

'Enchant' is an ability, not a spell. Ir at least I think so.

Made a version with Haste. That needed to cost 5 though, cause it becomes truly volatile with pump spells.

aura spells on the stack target

so the others are correct in that it needs to read instant/sorcery instead of any spell

Off topic, but the exception to that is when auras are cheated into play; that is how Academy Rector can attach Faith's Fetters to an Emrakul, the Aeons Torn in Legacy (Nic Fit variants specifically)