Nothing seems to be able to touch him at any time and his DPS just snowballs out of control until he can walk up to your tank, hit him 5 times in 1.5 seconds (Fatalis to OP, Nerf INC), and then skip-a-doodle-do to the jungle where he literally two shots just about everything.
His early game in the jungle is made much easier by the fact that his 2 (Devour) can eat any small minion right from the get-go. He can basically lock down an enemies jungle by invading their movement buff (assuming that the enemy jungler is preoccupied), and then just walking away in under 30 seconds.
His mid-game is basically gank city, with nothing but death and destruction in his wake. Hit his jump. Pop his 3. Point in the general direction of your enemies. Hold down left click. Get kills. He is just ridiculous. And his ult, oh his ult is basically the greatest thing ever. Wanna tower dive? Ult. Wanna push a wave? Ult. Wanna initiate a team fight? Ult. He is just plain ridiculous.
All Hail Bakasura, King of the Jungle.
He pairs wonderfully with Ymir solo lane.
Also, any tank will just murder him. 1.5 seconds after popping his ult, you stun him, then focus him to death. Easy peasy.
In fact, a lot of Bakas die that way. They get overconfident in their murderbot skills and end up dying.
If a Baka ends up 5 levels higher and starts destroying your team, well, that'd happen for pretty much any other god.