"Nova Summoner" can be used to special summon "Arcana Force 0 - The Fool" and "Marshmallon", from your deck in Defense Position ("Marshmallons" 1000 damage effect won't activate though, since It's in face-up defense position), possibly giving you a monster that cannot be destroyed by battle, or targeted by effects. This is something "Shining Angel" cannot do.
"Honest" is a great card to use with this as you can bring it back to your hand after you pull it from your deck with this card.
Special Summoning "Archlord Kristya" is ideal with "Nova Summoner(s)". Simply have 3 of them destroyed by battle one after the other, the third bringing out another LIGHTFairy monster. When that one is destroyed and sent to the grave, you will have exactly four Fairies in the grave.