Kritias as a replace for Future Ereve?

40 is about right, it would take me much longer to kill with murgoth summon or other skills if it was 50. Kritias lvl 210 mobs are in the low 20s (if not 20mil already), since I pop them easily with a summon.

They have exactly 41 million HP, based on Absolute Kill's damage value.

Hadriel

Having done this a few times now, I can say the training is really rather good during invasions. Especially when the minibosses start spawning.

On average I can get around 5-10% from an invasion at level 202. So around 150-300m experience. Not bad for solo training at all.