In addition to forcing each player to skip their discard phase, Anvil of Bagardan grants each player an additional draw at the beginning of their draw phase, but then they must choose and discard a card from their hand, offering those playing with graveyard shenanigans the free discard outlet they would have gotten at the end of the turn but now just at the beginning, meaning they could take advantage of it during their respective turns
These decks often have a toolbox playstyle and can adapt to any situation, and the Tri-Brigade strategy was the first of these tri-type archetypes to be a prominent meta deck
Its ability to draw cards whenever an opponent casts a non-creature spell ensures a steady influx of resources in a format rife with spells
Its firebreathing ability can also allow you to do extra damage, and unlike most, it costs generic mana instead of red mana, meaning this card can go in any deck
Because you have 21 cards, pile 1 will end up with six cards, and piles 2, 3, and 4 with five each