We considered this within the structure of brackets and just regular pregame conversations
You and permanents you control gain hexproof from blue and from black until end of turn. Being able to stop your spells being countered and also stop them dying to target removal is incredible, and being able to draw a card on top of that is amazing
While Necrodominance is on the battlefield under your control, abilities that trigger whenever a permanent you own is put into your graveyard from the battlefield (for example, "When this creature dies") won't trigger because cards and tokens are never put into your graveyard
A 1/1 elf with infect for one mana, a turn one Glistener Elf is often an ideal start for a deck seeking to win through the use of poison counters
Net, you have an impressive Constructed card that will also wow Commander players for the simple reason that it doubles counters
This could make Bring the Ending a little bit of a solid counter option, as it can counter stuff early just fine and turns into an easier to cast Counterspell once the game goes on