You could easily just swap in Walking Ballista, Heliod, Sun-Crowned and a tutor or two if that's your style
Tribal strategies are well supported in Commander, and do well as creature strategies that can develop a wide board early, which Jazal incentivizes
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#4 Also, when considering a planeswalker around a certain mechanic, remember that each ability doesn't have to involve the mechanic itself
The Spear destroys any non-land permanently at instant speed, and it's not impossible to get that two cost reduction
He serves as a cheap, easy tutor for your best auras and equipment, and then makes the perfect target for equipping them once he comes out as a creature