Free Finesse and DEX-to-dam prices Wolj into melee. His (very good) defenses there require more buffs than people are used to using in P:K so he can seem a little fragile at first I guess. Too many game-long decisions being made on the basis of too little information.
Wrath gives you more rests than P:K and Abundant Casting so it shouldn’t be a problem keeping Mage Armor, Reduce, Shield, Cat’s Grace, and Blur/Image up (Image prior to a tough fight, Blur for an area), with Barkskin from Cam and Heroism from wherever. Bubble Buff makes it all painless. You don't have all that yet in Garrison so maybe he seems fragile there? You do once you get out until you lose him and that's the time where he both slays and you most need it (he can tank/kill half of Garg cave duo with Yaker).
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Can hardly see him up there because he's Reduced I guess but he took on that whole ramp with Yaker and Bookworm's Headband made him immune to the Holds the Clerics like to cast.
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Obv he's good before Garrison for several reasons - here his Stealth let's you avoid random spawns for when you need to conserve rests before Defense.
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Image good vs Hard Smilos guarding Keen Longbow
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Latest thing I've done with him is add Transmutation magic with Mythic Focus. He can cast Slow with Swift Action using Darven's Hat. Then later Obsidian Flow for Difficult Terrain and turning on Fire Items.
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This was when Nenio's scrolls were bugged with super high DCs. Now they're just high, and Wolj can cast them.
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Rogue gets bonus to Perception with level making them the perfect scout. Wolj comes with his own Vanish to disarm inconvenient Traps undetected.
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Likewise his own True Strike to interrupt casters while rest of team is on the way. Lann + Bless Weapon stole his glory here a little bit.
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Prior pic was on Hard, this is Unfair.
You lose him shortly after that, but by the time you get him back you can start using his rnd/lvl spells like Sense Vitals, Stunning Barrier, and Displacement and really go off.
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You can tack on Vivi if you want some utility after ES12 (unlocks Double Debilitation) or maybe you can pick that with Vivi on top of ES 10 (when Debilitating kicks up another -2) but just like it's hard to beat a Pal in this setting it's hard to beat ES when you've got this many casts to work with. Most P:K companions could go a lot of different ways without wasting what they started with but that's much less the case with Wrath.