Catalyst needs to not proc off of freaking everything. I am waiting for people to start Spike Novaing their Catalyst units and boardwiping. With movement. Its like Red Sands / Fire Volatility except in a big freaking AoE
Because it's nice to have things that trigger off more than a particular subset of things controlled only by an opponent. I mean, if it was basic attacks only, it'd basically only ever damage melee champs, and you couldn't do anything interesting with it. Plus we already have plenty of anti-attack abilities of that nature.
Also Peaks Dew has come up a bit - he's a really cool enabling rune. If he got +1 speed and paid for it, he'd be really helpful to the theme. In this meta it just doesn't make sense to pay 76 nora for a 5 speed champ.
Since you asked: Have done that already some while ago with ST/SL, Steelspine Bearcat, Crystal Dragon; Rage Band gives them Violent, so each AP would translate into 4 damage dealt and +1 damage gained. Red Sand should also be very nice on the Elementalist. Especially with Tinder Box.
@iPox That makes me want to do something with Carrion Colossus, Draksar Constrictor, Taint, and Grant Aura. Tainted Colossus next to the Constrictor so they're damaging each other. Kill the carrionlings with the auras to increase their damage and to spawn more carrionlings. Vendetta on any worm to benefit more.