Stormspear

Requires attunement.
1d8/1d10 (versatile, thrown (30/60)) Reappears
in wielder's hand at the end of his turn if thrown.
+2 to hit and damage; deals +2d6 lightning dmg.
{t}: As an action, once per long rest you can cast
the control water or control wind spell without using
a spell slot, even if not normally able to cast that
level of spell.