I hadn’t thought about the limiting factor. I guess a more balanced approach would be to have a 30 second cooldown for the type of card used. So, if I were to use Balance to boost Melee damage, that puts the other two damage card types on the same cooldown timer while leaving the utility cards available. Likewise, using Bole for damage mitigation will put the utility cards on cooldown while leaving the damage cards available still. Since you could theoretically give a tank their invuln every 30 seconds with this, a way to balance Ewer would be to have it has its own cooldown, I guess. Similar to Hallowed Ground’s cooldown possibly. With this in mind, an astrologian shouldn’t be able to rapid-fire cards and it would make the player choose the best card for the situation.

Do I want to help the tank with two vuln stacks mitigate with Bole, or use Spire to extend the melee dps’s enhanced card (from the ogcd buff that doubles the potency of a card).