"Apu" is the only card in the game that allows the projection (casting/summoning) of Frens and skipping their frenning requirement. (Frens can only be projected (cast/summoned) by combining cards you already control, like yugioh XYZ summon).

Apu also has the effect of giving all of your manifest cards the tap (tap = -1 stat) effect of reducing the energy (mana) cost of the next card you project (cast/summon) by 1.

the choke point on this avatar is running out of cards quickly or getting forced into a defensive position where you can't spread out low cost cards.