Use Poppy Bomb as a possible escape when fighting Mal'Damba. If he's going Stun'Damba with Wekono's Wrath and you survive the first stun that hits you (if it ever does), get out of there; because more likely than not he's called for backup by now.
Stun'Damba is key here. If you can buff up the range of Snake Toss, fighting fire with fire can really hit Bomb King hard early-game - and late-game if he doesn't buy Resilience.
Believe it or not, if you're good at tracking, Jenos can get good poke damage on Drogoz if he's in the air. Strategize with your team to see if you can find a way to poke him out of the air and someone on the ground can finish him off.
Chronos. There is rarely a reason to get anything else for Jenos except Chronos if you're intending to heal with him. If you find yourself being hard-countered get Chronos II then buy another item to properly defend yourself.