Re: Isilla card -- Well, as was noted it's already automatically better than an elder willow, but I also thought the proc rate was too low. But I saw an interesting video of a high wizard using the card, and it seemed like it procced more the more stuff was being hit with AoEs, and procced a fair few times.
I mean, the cast reduction effect is nothing impressive, per se, but on top of +2 int is just fine.
And of course, vanberk opens more str than ever before available =o