Looking at my cube, there is critical mass for: Goblins (R) Humans (all) Warriors (WBR) And, with some effort, other tribes could get critical mass running only cards that are cubeable by themselves, keeping the Poison effect to a minimum: Soldiers (W) Wizards (U) Shamans (RG) Vampires (B) I'm fine with dedicating 2-3 slots per color so each of these tribes have a Lord or some other linear effect as a nod to play them (Goblin Chieftain, Champion of the Parish, Chief of the Edge) but I don't want this cube to be mainly tribal, just have an extra layer of synergy that cares about the creature type line at a low opportunity cost
Nyx Type: Plane - Theros Planeswalk ability: Nontoken creatures are enchantments in addition to their other types
The second will be opened and the same process will occur although they will be passed on to the right
Nissa has helped to establish an Omnath, Locus of Creation deck in Modern, which has kinda fallen off since the emergence of Nadu
Damn is both, which makes it far better than the sum of its parts
Im sure you wont mind losing 1 life (lets stay in the spirit of one mana for the sake or the article) to get rid of a Serra Ascendant