Super Boost (超祈願, lit. Super Prayer) is a Finisher Move-type keyword, exclusive to The ShootingStardragonArcher Lykeios. This effect is a hard once per game effect which gives every Red-only Grandwalker Nexus three cores, not counting the one likely to be added via Core Charge.
Lore-wise, Lykeios is a nearly fanatical believer, and such faith is converted into power for the Grandwalkers, represented through multiple core in-game. Additionally, the return obtained for his intense faith is his other keyword, Dragonshot.