mtg black angel cards MTGNexus My take on a mono

For example, Mirror Entity and Maskwood Nexus can turn Creatures into Shapeshifters with all types

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Witherbloom Pestilence (Black/Green) Strategic sacrifices, life gain and drain Dina, Essence Brewer sacrifices creatures for card draw, but can also sacrifice other creatures to power up another card and gain more life

If you're concerned with life loss you could consider some Lifelink sources, Mask of Griselbrand and Basilisk Collar are both very good at what they do, I think Mask might be better since it can be used to draw cards if people kill your Commander, but tbh an Anthem effect like Whip of Erebos or Raphael is probably more helpful, the only one I could find was Ardyn, the Usurper, which also gives your boys Haste AND can make a 5/5 Demon for you each turn, though 8 mana is QUITE high I feel the synergy of Haste, Lifelink AND a free 5/5 Demon each turn, even if they aren't personally a Demon

What can you do with your flashy new Dragons from Draconic Domination

it allows the critic to be harsh, and the fixer to do its best