Everything from magical schools to treasure-hoarding dragons, Gothic horror, dwarves and all-metal worlds have been covered in this game, and it's a remarkable universe
The counter gain seems minuscule at +2/+2 but if you are running a lot of Spirits and Arcanes its basically a free effect
You can only use each of the following effects of "Minerva, the Athenian Lightsworn" once per turn
When a monster attacks another monster, the attacking monster's ATK is subtracted from the defending monster's HP
The best application therein seemed to be an Azorius Artifacts deck that was using Mendicant Core, Guidelight to copy artifacts with a mana value of three or higher
I would be very dismissive of them if they didn't show up so much, and if they weren't so damn good