Elemental HERO Honest Neos (DUSA-EN028) [Duelist Saga]

During either player's turn: You can discard this card, then target 1 "HERO" monster on the field; it gains 2500 ATK until the end of this turn. During either player’s turn: You can discard 1 "HERO" monster; this card gains ATK equal to the discarded monster's ATK until the end of this turn. You can only use each effect of "Elemental HERO Honest Neos" once per turn.