Two mana, comes in untapped, and immediately helps you move forward that alone already puts it ahead of a lot of slower options
First sold in 1993, it's still going strong over 30 years later, taking players through the Multiverse of Magic planes and Universes Beyond
Infernal Legion followed by Sinkhole is extremely powerful setting your opponent back while also effectively putting them on a clock
Infect creatures are interesting too, because they deal damage in the form of -1/-1 counters, including while fighting
Any counters that are put on an artifact or enchantment while it's a creature because of Bello's ability remain on that artifact or enchantment while it's not a creature, even if they have no effect on a noncreature permanent
The typical way to use Brash Taunter is to build up another one of your creature's power to absurd levels, then activate Brash Taunter's ability and target the buffed creature