[Mode] Double Down

This gameplay mode is all about fusion of abilities

First the player picks a host champion, this is who you will be playing, and then they pick an essence champion, this is where the fun begins! The 2nd champion's abilities Passive/Q/W/E/Ult are applied as secondary effects to the 1st champions's abilities

Example

Yorick + Lulu Passive - Yorick has his 5% per ghoul thing, but also gains Pix Q - Yorick n Pix spit Glitterlance at enemies, and readies his Speedy Spectre W - An explosion that turns enemy champions into critters, or allied champions into speedsters, and creates the Slowdown Ghoul E - Summons the vamp ghoul, causes extra damage, and pix follows the enemy for a while Ult - Yorick creates a clone of an allied champion, while enlarging them to epic size

Azir + Veigar Passive - Turret + CDR=AS, Mana regen Q - Launch soldiers + shoot toward a target, if it kills anything AP++ , * (OP, yes, lol) W - Summon Soldiers, and drop AOE spell E - Drag Azir to soldier, and Stunwall Ult - Wall of soldiers + painful AP shot *

the targeting of the spells are based on the host, and the 2ndary either combines with the hosts' ability, or is fired in a line, depending on circumstances........ in the case of Azir+Veigar's Q and R, if combined, the OP level rises astronomically, if fired in a line however its not as bad, same goes with Yorick+Lulu's W, turning all champions in the explosion's radius to squirrels makes it epic

it actually might be possible to create a mode like this with little effort rather than actually fusing them, but bugs and balance would be in absolute chaos lol

sure 9/10 combinations would be imbalanced as all hell, but fun modes are usually imbalanced by nature lol, any one have any ideas of definite banned combos? or interesting combinations they'd use?