Budget Spiritual Symmetry (Modern)

So, aside from basic "spirit tribal + WU control" this has one main gimmick. Using the two BOTG block spirits, stifle your opponent's ability to play spells and draw cards, because symmetrical effects are always fair and balance d. Then, using the investigation triggers and flash granting abilities of the SOI block spirits, play spells and draw cards on your opponent's turn. After all, you only get one of each per turn, but their turn counts too. Using this, you basically get twice as many turns as your opponent if you have the whole thing set up. From this state, the Geier Reach Sanitarium is especially amusing to pop on their turn, and Day's Undoing dumps your hands and only gives you one card. While this is certainly fun, the Drogskol Captain and other generally good spirits and control cards give you enough beats to punch through for the win even if you don't soft lock your opponent into a concession. This is the cheap version because I'm cheap, but if you want to spend money on spirits while playing this style, rip half of a standard spirits list and add my dumb combo, mana leak, and path to exile. Also build a sideboard.