FitzTheRuke
Legend
Primus can help with number 2. With a -3, it only has a 10% chance of succeeding on its saving throw against his attacks.
Give us one more level, and creatures with a -3 Int will have to Crit to beat his DC.
It should have had advantage (it has magic resistance) so the math is a little more in its favour than it looks, though not by much.