I'm not too fond of the current GHB PRF weapon trend

This is our third AoE PRF tome given to a GHB unit in the game, and this time I'm not such a big fan.
Imhullu, in its original game, nullified attacks made against Gharnef.
Comparing this to Loptyr, a tome which halved enemy Atk before applying it to Julius' defenses.
Loptyr got turned into a tome that reduced enemy Atk by 6 during combat, effectively living up to its original tome while still being a fair weapon.
Imhullu, on the other hand, got turned into another AoE tome with 5 damage and simply negating enemy counter-attacks 𝙞𝙛 they're in the range, which granted is pretty large, but even still, he needs to be able to attack them for it to function properly, and on top of all this, is only active on the third turn.
This seems very iffy, especially for an infantry unit who must be afraid of any terrain on the map.
With the other two weapons to get this I can understand it, as Skadi and Breath of Blight both kinda needed to be built from the ground up to make them viable in Heroes. But with Imhullu, for me at least, it just feels weak and ineffective, and not doing justice for one of the main antagonists of the original games.