Less 1^n events
https://forums.elementalgame.com/417476
Fireball is a rank 3 spell, you have to be at least 5th level to know it. It costs 30 mana to cast and takes 4 actions to cast (3 in your build). It does 4 fire damage + 4 per fire shard (6 + 3 in your build) and has Overkill (damage is multiplied by the members of a group). It does damage to all units in 1 radius.
The additional action is a great change to fireball and hopefully to blizzard, too, but decreasing the base damage and increasing the shard based damage makes the spell less useful if the player has bad luck with the shards on the map and more powerful if the player is lucky with the shards on the map.
I think FE needs LESS 1^n events, but currently the luck is very important, because it gives the player shards of the required type, champions of the required type, monsters of the required level, powerful loot and powerful talents.