Sword Edge:
Tau is a 6 at best. He’s too flimsy for what he does. There’s no point in a skullbasher that can’t take a hit back. (failed Sheggra board swing, loose Keeper of Souls match, or cascading skulls)
As a first slot:
- He gets three shotted by almost any enemy troop.
- Slows down friendly support units (yellow/blue from Celestasia, blue for Alastair) that would keep it alive or charge it up to use its ability
As anything not first slot:
- Removes Red, which will hinder you more than hurt the AI unless it has a Sheggra on its team.
- Sits around waiting to be picked off from its low life total
Knight Coronet should be a 5 with a 0 bonus to arena. Far too weak, expensive and unimpressive damage-wise (split damage is almost never good, 1HP remaining can still win games). In Arena, it’s overcosted at 12 mana for its damage and if the opponent doesn’t have its first slot, its attack stops hitting correctly. Later on, it might only hit one target even if there’s two enemies on the field. Blue is the best color in Arena (because of the automatic Blue/Brown banner), and I wouldn’t want to block Wight/Druid/Arrow of Slaying/Frost Giant etc with something unimpressive like Knight Coronet. Tons of better Ultra Rares in Arena.
I’d give Griffon Knight +1 in Arena from having Blue/Brown. Charges fast from the banner and hits fairly hard, even if random.
Peasant, I’d give a 0 and a +5 in Arena. At 3 to charge, it stays out of the way of major blue users like Frost Giant, Wight, and Druid, but can also destroy gems to create a cascading 4 match or pick up stray mana to charge units that need 1 or 2 to top off. Infinitely better than a lot of other common units in Arena like Ogre and Fortress Gate.