The new Urzas Cave from Modern Horizons 3 doesnt even require them to cast a single spell in order to do so
The coolest thing Ive seen New Blood do is steal a Poppet Stitcher to start creating 2/2 decayed vampire tokens
Bartolome del Presidios block and sacrifice tactic to prevent damage when attackers and blockers are declared, some of your creatures will lose their battles, so you can sacrifice them instead to start scaling your Bartolome, and hell eventually become a massive threat
This specific card isn't available in any other language, which makes it rare and unique
There are some more minor options in Red and Black utilizing more of a ritual-style ramp effect, but outright ramps is a bit more of a rarity, especially on ETB creatures
The illustrator, Ryuda, employs heavy ink outlines and dramatic shading contrasts that give the villain an almost physical presence on the smooth card