mtg elf token cards Warrior (1/1) by Liz Danforth providing mana acceleration or synergy pieces for green MTG elf token by Mega

So while it is effective for identifying an Alpha Rare, it is not definitive in identifying a Beta rare from re-backed ICE or CE

She has a static ability that means whenever an aura spell that you cast hits the battlefield, you can search your library for another aura that costs as much or less, and put it into play attached to Light-Paws

The defender should make clear which creatures are blocking which attackers by assigning the blockers to attackers

There are also cards in Midnight Hunt which simply tell you it becomes day or it becomes night as part of their effects

That means this mono-blue faerie is probably more likely to be a blink build, but you dont have access to white to help that strategy work at peak efficiency