The last of the Savanna Elves’ events is not a particularly powerful one, but it is quite versatile  It can play both offense and defense, giving you important and maybe unexpected summoning spots, while paying for itself by boosting the targeted unit.

 
It’s really Abua’s primary way to keep an offensive going, often coupled with a Rhino.
It is without a doubt going to be your least used event typically, as there will be games where zero Chants of Weaving are played.  Yet in some games though ... it can be the difference between winning and losing.