Make your own Doom Bot
Simple. Make a Doom Bot of yours (not the ones already created). Make funny jokes if you like. My 2 examples:
Doom
Bot
Passive: Up all the time, does full damage to turrets
Q: Gains gold on enemy hit
W: Same
E: Randomly spawns barrels close to Doom
Bot and when close to an enemy, it will explode after hitting 1 health (20 secs cooldown)
R: Deals true damage instead
Doom
Bot
Passive: Requires 3 basic attacks or Q only. Enemy minions are randomly affected. If a minion has 5 blood, Doom
Bot will get Noxian Might
Q: Deals instant damage instead of waiting for 0.75 seconds
W: The same
E: Cone pull is 3x bigger and snares for 1 second
R: Deals full damage even when not having 5 stacks.
OH
BOY
HAVE I WAITED FOR THIS
Passive. Gains 5 chimes per second. Always has 4 meeps following him, that when he attacks, spreads to all nearby enemy champions (regardless of who bard is attacking [minion etc])
Q: shoots 3 q's that go through all enemies hit stunning them. If collides with terrain does double damage.
W: Heals for full health when placed (has no charge up time)
E: can go through multiple walls
R: Automatically kills enemy champions when it lands.
Passive: heal procs when Maokai deals damage, not necessarily by an autoattack
(also, rushes
)
Q: longer range, also knocks enemies towards Maokai.
W: targeted snare, but also affects nearby enemies.
E: Saplings move more slowly, but survives much longer.
R: On second cast, releases shock wave that 
Passive: Skaarl is courageous and will never have frayed nerves.
Q: Kled fires a hook the size of Blitz's and instantly pulls.
Q(Unmounted): Kled now has basically Graves ults.
W: Is now always up.
E: Goes through terrain and can be activated three times.
R: Kled can now allow his entire team to go through walls and now their speed goes to the extreme.