Manipulating levels may seem a bit pointless once a monster is summoned, but its useful to dodge certain card effects or even to initiate certain special summons
(This is important) It's a deck that concentrates the strong points of each engine and theme, so there's no way it could be weak (I'm convinced)
Playing a card like this is a great Spell substitute and helps you survive until your big cards come into play
During your opponents Main or Battle Phase (Quick Effect): You can banish this card until the End Phase, then if you banished this card with 2 or more Xyz Materials, you can also send 1 Fusion Monster from your Extra Deck to the GY that lists Fallen of Albaz as material
He should have banished Metaphys when he plays this card, so you shouldn't have any trouble using the effect
So, as with Pendulum Summoning monsters from your hand, you can also Pendulum Summon Pendulum Monsters from your Extra Deck that are face-up in there