Pokmon as a long-term investment may sound about as solid as the recent GameStop stock boom, but its more than that
If the artifact is a vehicle, it keeps its original stats, which can be a big advantageespecially with the likes of Consulate Dreadnought, which comes in cheap but has a steep crew cost
Or give it some lifelink to get 3 life for every land
Black and blue typically get the scraps left over from the other 3 colors, resulting in a lot of varied card designs that are often mechanically unique
Harmless Offering Donate color shifted to red makes it playable for just about every donate commander, and you cant argue with the awesome Howard Lyon artwork
For each creature I sacrifice, Mycoloth will get two +1/+1 counters and on my upkeep I'll make a 1/1 Green Saproling for each counter on it