User blog comment:アゼム/【For any users】アニメWでは君のバディは誰です！？/@comment-25600444-20150428192528/@comment-25600444-20150429185501

Oh yeah, just for clarity, the reason for the Call Condition and Soul cost in the effect is that (the way I envisioned it), Genesic GaiGar would add the Genesic Machines to its Soul and once all of them were in it, GaiGar would then summon Genesic GaoGaiGar on top of itself and the Soul would be added to it.

Think of it along the line of Card Burn.

Genesic GaiGar = Card Burn

Genesic Machines = Card Serpent + Card Rhino

Genesic GaoGaiGar = Ultimate Card Burn