Ringo

Just started this combo thanks to this thread. Only level 12, but Web Grenade containment has been a great boon

Not all Controller Immobilizes are made equal, however Plant's Immobilize does in fact apply the Rooted effect which counters KB, KU, and Flying powers! Plant/Storm is my main, Seeds>Roots>FR>Tornado>Lightning Storm melts all minions and Lts in a spawn. Get enough global recharge and you can do that about every 20 seconds (LS isn't that fast, bu the first four are), which means by the time you're done casting you can start the chain again on the next spawn. Also using set IOs, Plant/Storm can cap Ranged def without any purple sets (ranged AND AoE def with purples), and your hurricane takes care of your melee defense. It's a pretty amazing combo.