For tutor targets, one of the best is Unesh, Criosphinx Sovereign, which is sort of a hidden commander for the deck, supercharging all our sphinxes like Defiler of Dreams
Was using the Warrior of Light as the lead ever on the table, perhaps with some sort of background/class system to let players customize their precon
If you want to run this creature, ask yourself why youre not running Mirran Crusader first
It also allows you to cast colourless spells and artifact spells as though they had flash - allowing them to be played anytime an instant could be played - and gets a +1/+1 counter on it if you cast a spell that costs more than its power
As many times as you have available mana, you can activate regeneration shields
If Rest in Peace is destroyed by a spell, Rest in Peace will be exiled and then the spell will be put into its owner's graveyard