Uncommon spells are the 11th through 20th spells of each Magical Realm. Uncommon spells include a few mid-tier Fantastic Unit Summoning Spells, but for most realms they largely include low-cost spells that are nonetheless quite effective. Uncommon spells will often be the lynch-pin of a wizard's strategy early in the game, and carefully building one's strategy around the early availability of even one such spell can make a huge impact. Later on in the campaign, Uncommon spells will see a great deal of use, particularly in conjunction with stronger spells (i.e. in support of your increasingly-powerful assets).