mtg black storm cards Mono-Black Necro Casting Cost Card Type Storm the Festival (MID-364) -

While this direct damage is nice, Omnath allows each land you play to provide additional value, as whenever a land enters the battlefield under your control, you can buff an Elemental you control with a +1/+1 counter even drawing a card if you've accumulated enough land

Army of Allah can only get you so far, and the buff this card provides is needed for a deck that still struggles (even more so without the inclusion of Fallen Empires)

(If a creature with a finality counter on it would die, exile it instead.) Wail of the Forgotten One blue, one black, Sorcery - Rare Descend 8 Choose one

Those Planeswalkers can be your commander

More importantly, some of these cards offer the only foil treatments for them on the market