Honestly if you need consistent early-turn mana acceleration in a color other than green, I'd just play Sphere of the Suns
Ulamog is less flexible than the construct, but it gives us much more potential in a longer game so a single copy is certainly justified
This means that if you dont want to see a card in your opening hand, you want to play a card at 1 to minimize the chance of seeing it
So long as you have Citys Blessing and a card that creates tokens each turn, like Retrofitter Foundry, attaching Mirrormind Crown to Timestream Navigator will create infinite turns
Why These Are the Best Cards in Darkness Ablaze These five cards combine play value, visual appeal, and rarity
Do you like these smaller sets in-between the large main set additions