Its worth keeping in mind that this is before the decks have actually been released, so a lot of this is speculation when it comes to new cards
For instance, Tarkir: Dragonstorm 's Draft archetypes focused largely on three-color pairings
Ward makes it tough to remove, and cards like Metallurgic Summonings or Archmage Emeritus help you profit even more from casting spells in quick succession, turning a control strategy into a value avalanche
The One Ring is still that good, and you can get it in a normal, cheaper version if you want it
Although the Auras and Equipment attached to Solaflora will affect other creatures you control as though they were the enchanted or equipped creatures, those creatures aren't actually enchanted or equipped
Second, you get to turn one artifact into another, and between Simulacrum Synthesizer and Weapons Manufacturing, we have some incentive to play multiples of these