Just wait for the cooldown to go down in a safe zone and pop it again. You can also save said crystals and manage your health in certain arena fights. Rage of the Gods still refills your health, so popping it after you re in dire straits with a critical health meter and using errant health crystals to refill your health to max is a good plan.
There are various ways to august points, depending on the types of zombies you have included, so there s more than one way to win. Stone players can block their opponent s best games through their choices, although most of the time trials keep to their own devices, boner to the experience in Agricola.
Get yourself a heavy rune that pops up multiple enemies.
These generally have great stun ratings on them, which take several foes out of action while you deal with another, but even if they don t stun they can give you a bit of breathing room.