Kaheera, the OrphanguardKaheera, the Orphanguard This lord from Ikoria : Lair of Behemoths not only boosts all of your Cats and provides them with vigilance, but it also delivers that same benefit to your Elementals, Nightmares, Dinosaurs, and Beasts
Designers clearly appreciate having the means to simply take a permanent out of play without moving zones, resetting its history as an object, or any of the other wacky rules implications you get with flicker effects
Grey Host Reinforcements has a similar problem
a fresh take on a returning game mechanic
You can buy the ability to open packs faster, and there are also currencies you dont have to spend money on, and its all kind of confusing in text, but it makes sense and is easy to understand in context, so, for your sake and mine, I am not going to spend time explaining all of it