User blog comment:BestNaPlayer/Sycamore the Warden/@comment-22636720-20140510154318/@comment-24087642-20140511114646

He'd end up a support entirely because of his E:

1) It's op.

2) since the difference between 0 and 75 armor is much greater than the difference between the difference between 100 and 175 armor, he'd cast it on his adc.

3) If he's relying on the armor coming to himself, he probably won't build armor, which won't go well for when it's on cooldown.