Tax beard in op13 Ace | tcgmode

I’ve seen a lot of people teaching in 1 copy of tax beard back into op15 ace along with the 6 cost 8k boa that’s good for the enel matchup. I understand the use of the 6 cost and have added it to my deck. However I can’t figure out what purpose the tax beard is supposed to serve as a 1 of. It rea...