Its active ability to sacrifice a Goblin for 1R and inflict two damage to a creature or player lets the player, should one prefer a passive style, quickly put the tokens put into play by other cards into the graveyard in order to reduce their life points over the opponents defense
For example, if you control Phial of Galadriel and have no cards in hand and you're instructed to "draw two cards," your first card draw is replaced by drawing two cards, then you'll draw the second card from the original instruction
This often sees play in Pioneer decks alongside Lotus Field
Modified feels a bit like Historic, a mechanic from Dominaria, in that it isn't a new mechanic as such, but instead a new way of using shorthand to encourage you to do specific things
Hundreds of legendary creatures exist all throughout MTG, each of them capable of defining a powerful Commander Deck