Ashnod's tends to lean slightly more in the combo direction with Phyrexian being a bit more generally useful
Considering that you'll open one copy of Heliod, Sun-Crowned roughly every 3.5 booster boxes, this means that the supply of the Secret Lair version of Heliod, God of the Sun (again, based on our estimate) is roughly the equivalent of 175,000 booster boxes of Theros being opened (at $100 a box, about $17.5 million dollars worth of boxes)
This pup earns its adjective
In fact, searches for Pokmon 151 increased by nearly 11,000% YoY in January, and in October 2023 the month after Pokmon announced a partnership with the Van Gogh Museum global eBay users searched for Pikachu Van Gogh nearly 40,000 times per day
While a two-cost creature that only taps for one mana is a bit on the weaker side, an extra counter can be a huge boon to creatures like Haruspex, a new (and weird) mana provider