After doing a thorough research on a solid pile of precons and shuffling through a bunch of chaotic battles, I got answers
Using companions gives you a material reward for your sacrifice, AND shows off what youre doing right from the start so your opponents can appreciate it
Their tap ability to deal 3 damage to an attacking or blocking creature is slow and limited in scope, failing to address more than one threat at a time
However, with Maxx "C" banned in the TCG, combo-based decks can run at full power with little to no interruption to slow down gameplay, leading TCG players to consider the card's removal from the banlist
If you are looking for a new Magic: The Gathering experience when you play you should definitely take a look at the Foundations Jumpstart format
For example, Grass-type decks are focused on placing as much energy on the board as possible so that they can deal massive damage later in the game, while Psychic-type decks focus on attacking the opponent's Pokmon on the bench while strategically setting up an elaborate board