It's a nice fantasy of the caster presumably having to exert some force to remember the form of these beings, like a channeling magic in video games
The Duelist raises their Duel Disk into the air, creating a "7" shape with their arm, and "Fusion" creates a "Road" from the Duelist's Duel Disk, then it shows the listed materials fuse by overlaying one over another, creating a large colored beam, the Fusion Monster is generated afterwards
For example, let's say you play all of your spells on curve, but your opponent plays nothing on turn one, a two-mana spell on turn two, a two-mana spell on turn three, a two-mana spell on turn four, and so on
There are a few areas of potential improvement, but Eriette is an excellent deck straight out of the digital box
In the right types and quantities, these fair payoff cards can effectively punish treasure decks, opposing infinite combos, even board wipes