-arcane comet refunds 20% of its CD per single target ability (cassio E,ryze abilities),10%per AoE,5% per DOT hit (like cassio Q)
-kleptomancy gives you so much gold especially vs melee champion,you can spam abilities while stacking your tear and earning gold when you autoattack your enemy
-glacial augment is good with glp800,i think it will be nice on swain
-with summoner specialist you could get flash/ignite or barrier for your early game,then swap with ghost/cleanse or tp for lategame
-phase rush can be good as well
Its a nerfed SRS. It is not SRS.
they are still balancing these runes,so they may buff or change it
-biscuit delivery is so good especially on ryze,free sustain and mana pool
-magical footwear is insanely good on cassiopeia (xD)
-nullifying orb is good as they have a really bad range so they need to be tanky
-the ultimate hat will help a lot khartus
just some examples how the new runes can work,btw don't forget that those champ have already a nice damage in their kits and their CD are so low,the only thing that they need is some utility and target access from runes,things that old ones wouldn't give