Card starts out working fine, attacks when a spell is cast on your turn.
Once you start reinforcing the card, no matter how many spell cards you cast on your turn, the card will not activate and attack.
Also, card is finicky about casting order. If you cast a spell and it gains attack, if it is reinforced afterwards (during the same turn) it loses attack again.
It seemed to be working OK before the recent patch.
I’m also bothered by this bug. I know it’s not the best creature but it’s the best blue beater I have right now and I can’t reinforce it unless I’ve given it vigilance. For a card that is handed out so early in the game you’d think they would try to fix it so as not to give new players a bad impression…