mtg black defensive cards Magic the Gathering Bloodline Keeper & Defense Grid/New Condition!!! MTG Cube: Top Black One

Both of these were reprinted in the Modern Horizons 3 precon, and the Marvel is in the Aetherdrift precon

This is an artifact-centric Izzet card that copies activated and triggered abilities of an artifact you control, while also becoming a large creature itself

6 mana is a lot, but if you can find a way to get this kindred enchantment out early in Constructed formats, it could definitely see some play

Singularity Rupture This board wipe can be a deadly combo with a card like Riverchurn Monument afterwards to mill opponents, but it also gives you the option to mill yourself

You cant really expect your 14-land, seven Plains plus seven Mountains Boros deck to have consistently good aggro openers or can you

Kaervek, the Spiteful accomplishes the same thing alongside Maha, its Feathers Night