mtg vivien cards Magic The Gathering - Foundations Tokens - Reid Emblem Casting Cost Card Type How does Vivien's -2 ability

However, even with the addition of these black cards to your deck, your color identity remains mono-blue, so your Command Tower could not produce black mana, for example

The inability to block is going to matter in damage races, so Bloodfeather Phoenix will be worse the more likely you are to play an aggressive mirror in a Cube, but we often see the aggressive decks off on their own islands in the digital Cubes, and in those environments, cards like this are great

The Crystal Cycle Taking a cue from the cycle of Medallions, we have the cycle of Crystals, which at least casual EDH decks will be interested in playing

Here is my top ten Simic cards for cube play: 10

Theres no reason not to play Cloudblazer and Mulldrifter in a deck like this and both are great to donate then yoink back, then repeat