If you can outcast your opponents and get down to one or fewer cards in your hand, then you can refill your hand and out-card your opponents in the long run
If you can defend this Dimir planeswalker , you should be able to exile opposing graveyards three or four times, making it hard to build a full graveyard
Notably, The Balrog becomes cheaper when any player sacrifices something, not just its caster, so group sacrifice effects are incredibly efficient for this deck
Weve seen a couple in the past, like Mythos of Illuna and Will of the Temur, but overall, its an incredibly rare effect
It would be something if said creature was actually useful in some way, because perchance you can now have 12 copies of the same card instead of 4 copies