This is an invoked kaiju deck that is based on fusion summoning. The spellbook engine improves the consistency of the deck and the kaijus can eliminate big threats on the board. Mystic mine is used here to stall when you don't have a good play and handtraps to control the board. There can only be one is a useful trap against many matchups like pure Blue Eyes or Dark magician.
My rating:
Attack: 3/5
Defense: 5/5
Consistency: 4/5
Strong Against: Decks with only 1 or 2 types, Gren Maju, Dark Magician
Weak Against: Virus Control, Nekroz
Small combos:
Normal summon Aleister (or use Magical Meltdown to search him)
Activate his effect, get an invocation into the hand
Link Aleister into Almiraj
Link Almiraj into Gardna
Fusion summon Purgatrio with Aleister and Almiraj in the GY, banishing them
Add Aleister from the banished zone to hand by shuffling invocation into deck
Spellbook combo:
Activate Spellbook of secrets, bring blue boy into hand
Normal summon blue boy, bring Spellbook of knowledge into hand
Send blue boy to the GY with Spellbook of knowledge's effect and draw 2 cards
This is a really fun deck if you play it correctly. Have fun!