The Ioun Stone of Might gives 89 Power/ArmorPen/Recovery and 88 Deflect at its current max rank of 20 (green). Based on the numbers given for the Stone of Allure and Cat, the Might stone should have ~120 in each stat by rank 25. Also note, all companions have a type (controller, defender, striker, etc). The Cat and Stones…
Uh.. Mark breaks when the marked target damages you. So, if you block and use the 2 block at-wills, you can keep the target marked and do damage, even aoe damage with the block-stab (plus extra threat). You can even sneak in encounter abilities between attacks and maintain the mark.
It is definitely frustrating not being able to rank up companions (at least they still accumulate xp at max rank, according to the tool tip on the xp bar). With the low rank and poor AI (standing in red, moving in front of melee mobs) the cleric dies pretty regularly from 40+ onward and after 50+ tends to die almost every…
Ioun Stone of Might Passively has Power, Armor Pen, Recovery, Deflect (at Rank 20, each of the four stats has 89-90 before any runes or gear equipped) (another other stat bonuses can come from the gear and slotted runes) 3 Offensive Rune Slots Ring Slot, Belt Slot (at 15), another Ring (at 25)