You can banish this card from your Graveyard, then target 2 Level 5 WATER monsters in your Graveyard, except "Gazer Shark"; Special Summon both those targets. Their effects are negated. Immediately after this effect resolves, Xyz Summon 1 WATER Xyz Monster using those 2 monsters only. You can only use the effect of "Gazer Shark" once per turn.