pretty neat idea, but it's too much susceptible to control decks.
for example a classic rainbow deck can win easily (sundials, dimensional shields,bone walls - you basically have just 7 creatures to deal damage), the same for a ROL+HOPE.
other shields can harm this deck A LOT (permafrost, fire buckler, spine carapace) leaving you with so much little damage to deal to your opponent.
imho a "mono white" deck that wins constantly it's really had to pull off...
keep up the good work!
(why the 3 ray of light?)