Hey I'm overlording for my group, and one of the heroes plays Tarha as Runemaster.
Now I don't see any weakness to this character, especially if paired with a Knight Syndrael and a Disciple.
The Runemaster has rune mastery since the second quest and the heroes got lucky and got to buy mana weave after the first Quest.
Now that bastard never runs out of stamina, because he can always just exhaust those cards to regain stamina if he doesn't throw enough surges, so he never runs out of stamina or has to rest.
Plus the disciple gives him another yellow dice (without using an action) and the Knight protects him from attacks. Since he is a ranged fighter he can also hide just one square behind the Knight, making it impossible to throw him with Ettins because I can't get on an adjacent target, so I can finally get him away from the knight.
This makes him rain (explosive) death on my monsters without me having any way to prevent it. He easily kills the toughest monsters in one turn.
Gives a blue and a yellow dice (since he is Tarha he can reroll the blue dice if he gets the X)
1 surge gives pierce 2
Potential for two surges and 4 damage
Gives an additional yellow dice
potential for 1 surge and 2 more damage (3 surges and 6 damage so far)
Mana weave and rune mastery
2 guaranteed surges (potential for 5 surges and 6 damage)
Runic Knowledge (adds two guaranteed damage and suffer one fatigue (or damage in case he has no stamina left, but he gets healed every round by the disciple anyway)
recover one stamina (or health when close enough to the disciple, making runic knowledge cost nothing, even at full fatigue)
End result: An attack with a guaranteed damage of 3 with pierce 2 and propably blast too, with no fatigue costs and the potential to have it cost 1 fatigue and be an 8 damage pierce 2 blast... for ONE action.
A second attack follows, where he regains another stamina thanks to his guaranteed surges (at least only two potential surges from rolls here, but nevertheless he usually gets back all of his stamina, unless he uses exploding rune, in which case the potential damage goes through the roof and which presence alone forces me to not put my monsters together, making many monsters almost unplayable or very weak in tight spaces)
So this character rarely runs out of stamina, cannot be dispatched quickly and gets healed for 1-3 points every turn unless the really tough knight takes a harsh beating (but why would I want to attack the knight? The amount of damage I would need to bring him down AND attacking the Runemaster before the Knight is up and running again.) and kills multiple monsters each turn. The massive amount of surges also make shadow dragons useless, Ettins die even faster, small monsters get killed by blasts. I don't know how to deal with that group. The only weakness they have is that every one of them has only 2 perception, but that rarely does anything for me.
And tips about weaknesses I overlook here? A monster that would be great dealing with her? So far I am only playing the base game. Any particular expansions you would recommend to make it a little harder for this character?