Its incredibly easy to tap creatures in these colors, be it with white tappers or with artifacts, or with blue creature spells that enter and tap/freeze other creatures
It can kill almost any Planeswalker and most creatures, except for maybe the best blue card, Murktide Regent
It's also an interesting black draw in a multi player format like commander, where you would have options for how many cards to draw (and life to lose,) based on the chosen player's graveyard
This opens up an avenue for which Super Rejuvenation can be utilized effectively, albeit small
There are also two cards that care about Incubators without themselves having incubate
Minccino #RC18Common $8.42 Elesa #RC20Common $2.10 Pikachu #RC7Uncommon $84.17 Audino #RC17Common $5.44 Meloetta EX #RC11Ultra Rare $14.32 Stunfisk #RC12Uncommon $5.30 Ursaring #RC16Common $8.42 Servine #RC2Common $2.28 Kirlia #RC9Common $6.22 Piplup #RC6Uncommon $14.41