Astolfo, Blessed General

[Const]: As long as all of the SIGNI on your field are white, this SIGNI gets +4000 power.

[Const]: As long as there are fifteen or more white cards in your trash, this SIGNI gains "[Const]: During your opponent's turn, this SIGNI gains [Shadow — SIGNI with power less than or equal to this SIGNI]." (This SIGNI cannot be targeted by your opponent's SIGNI with power less than or equal to its power.)