Momo, Friendly Flier's second ability only reduces the generic mana cost of the spell
The new supporters and items featured in the Scarlet & Violet are focused around either providing card draw - such as Professors Research and Nemona - or finding specific types of cards, like Jacq and Arven
It's absurdly strong in the Bant deck Counter Blitz led by Tidus, Yuna's Guardian
Other options that synergize directly with the theme are The Mycotyrant, Ghave, Guru of Spores, and of course Xavier Sal, Infested Captain
However, it can get complicated, as threshold checked at different times depending on the type of spell you cast
Mythic Dragon A mythic rare dragon soaring over a volcanic battlefield, massive wings streaked with molten lava, glowing magma cracks across armored scales, intense orange-red palette, epic scale and motion, smoke and embers filling the sky, cinematic action lighting, ultra-detailed fantasy concept art in a vertical MTG-style card composition