Yutas activated ability works okay as a way to sneak in card draw for yourself on an opponent's turn, flashes in for just bonus cards a lot of the time, and it's a decent way to trigger your forced draw payoffs
However, you rarely get conditionless reanimation in white, making Karmic Guide useful
If enough -1/-1 counters are put on a creature you control at the same time to make its toughness 0 or less, Buzzard-Wasp Colony's last ability will see all of the +1/+1 counters it had when it died as well as the -1/-1 counters it had, and an equal number of each of those types of counters (plus any other applicable counters) will be put onto Buzzard-Wasp Colony
And why
Easily played at 3-4 copies, Brawl is usually a must-have for any deck fielding Ruby
Exquisite Archangel has Flying and "If you would lose the game, instead exile Exquisite Archangel and your life total becomes equal to your starting life total"