Reducing the casting cost of instants and sorceries and benefiting from spellcasting are common themes among the subtype, so those are a safe bet if youre looking to build a wizard-heavy typal deck
Custom card tournaments are a great opportunity for you to pit your creations against others
Eshki is a bit more of a generic big creature commander, not having any specific Dragon abilities, but giving you a free draw when you cast a creature with power four or more, and then dealing damage equal to Eshkis power when you cast a creature with power six or more
Being enchantment makes Insight hard to deal with, especially in mono-red or mono-black
Because if they are just: Everyone gets a mana of their choice, everyone gains 3 life, and then their ultimate is everyone draws seven cards, then they may not be the most powerful cards ever