Girallon's blessing, IIRC, lets you essentially hold things with the extra two arms. Therefore, you can wield a shield and a two handed weapon. Or a one handed weapon, a shield, and two scrolls. Or a wand and a scroll. I would use the Girallon's blessing w/ scribe scroll and create wand. I am not up to speed on good cleric spells, but I would put a range spell on the wand, a last resort blasty spell on the scroll, and the highest damage one hand weapon you can use(would be mace, but you get weapon prof. and weapon focus w/ your deity's favored weapon from War Domain. I don't know what your Deity has.)