Urza doesnt currently see much constructed play nowadays, but that wasnt always the case
Each March of the Machine Prerelease Pack contains one of three additional Prerelease promos: You'll get one of these three promo cards at random in addition to your year-stamped promo rare or mythic rare card from March of the Machine
Like most Magic: The Gathering cards, the value of Chalice of the Void depends on a few consistent factors: its rarity, the printing and finish (regular or foil), its physical condition, and the set it was printed in (Magic Online Promos)
SCG has no NM or SP copies listed, and wants $180 for their MP copies
Valors Reach Fun: 2 Impact: 2 Chaos: 4 I get exactly what this plane is going for, I get why its designed this way (Kylem is the Battlebond plane) its just a very specific restriction to try to work with in a way that doesnt really encourage a ton of politicking outside of extremely particular circumstances
Three of them provide mana fixing, although I would consider only Oasis Gardener to be a good card
