extra booster box one piece EB-03 Heroines Edition Japanese Pack Nefeltari Vivi One Piece Tcg: Extra Booster:

If a creature you tapped for Nihiloor's ability is somehow no longer tapped as the reflexive triggered ability resolves, that ability will still resolve and you will still gain control of the target as long as it has less power than the creature you tapped

Getting to tutor and cheat two strong mono-colored cards into play helps a bunch, and its a huge payoff for ramping to 7 mana

Additionally, most of these spells not only draw you cards, but also give other benefits as well

If you gain an amount of life "for each" of something or "equal to the number" of something, that life is gained as one event and the ability of Bilbo, Birthday Celebrant applies only once

Really a powerful effect at virtually any level of table