At the beginning of combat on your turn, create a 2/2 red Mutant creature token. It gains haste until end of turn. Destroy it at the beginning of the next end step.
{1}{W}: Target attacking creature token gains indestructible until end of turn.
In the case where the Mutant creature token isn't destroyed by the delayed triggered ability (probably because it gained indestructible due to Old Hob's last ability), that delayed triggered ability won't trigger again.