It protects the monsters it points to from battle, and its effect calls forth Goukis from your Graveyard for instant tag team action
This is the engine of your deck
C Common NEXT X TRAP Special Summon any number of monsters with different names from your hand and/or GY, in Defense Position, that are all "Neo-Spacian" monsters or "Elemental HERO Neos", but negate their effects, and as long as you control any of those Special Summoned monsters face-up, you cannot Special Summon from the Extra Deck, except Fusion Monsters
Inti only lets us play those cards until the beginning of our next end step, so the key to maximizing our chances of playing each card we exile is by discarding outside of our own turn, so we have all our mana available next turn to cast the exiled cards
As for payoffs, there arent too many but the few that exist could go off if you get the nut bird deck
Heres a side-by-side: The key differentiator