Biggest difference is that that makes the damage source the colour of the spell, rather than Season of the Bold’s Red.

If people ask that rules question of yours, point out that it’s analogous to bolting a Tim in response to the ping on the stack, or in more recent terms: disenchant Kumano Vs Kakazan when the Chapter 1 ping is on the stack.

It is odd that it’s a sorcery that makes an effect that lasts into next turn, though. Definite potential memory issues.