Experience effortless, snap-back accessibility
If something becomes a copy of the token, the copy is also a Reflection in addition to its other types, has haste, and isn't legendary
Getting a bunch of 2/2s with vigilance for one mana apiece (not counting the pips) can easily populate a board, especially late game
Brigid's Command Brigid's Command includes a fight mode and the most sensible one to help your fight is the +3/+3 option
In a pinch you can use it to dig through your deck to find an answer you need for a board state.
In my eyes, this explosion in popularity within the community came from the release of Shards of Alara and the heavy influx of shard colored legends, many of which were also well suited for themed decks and underexplored archetypes