I also tried the Warpseer 2/3 times, he’s still a solid pick with his access to monstrous rampage, his good save/ward and his bravery bubble (that helps heroic recovery a lot)
But his lack of Grey Seer spell lore really bothers me, and the fact that he doesn’t have any cast bonus
Maybe you’ll do better than me with him ^^
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I just got first place with this list (3-0), really cheesy and unpredictable
Next turnament in two weeks and I plan to fit a screaming Bell as my general, as it is both a really good anvil (that lacked on my list) and an extremely good spellcaster (especially with arcane tome + MoM)