This is just a fun Timelord deck to mess around with. Well actually you can OTK with this deck:
5 cards: 2 Michions, 2 Celestial Transformations, 1 Sandaion. Summon 1 Michion, use 2 Celestials to summon the other 2. Attack with 2 Michions ( halve your opponent's LP twice) first then with Sandaion ( -2000LP). You can XYZ summon Superdreadnought Rail Cannon Gustav Max to deal another 2000 LP
Another strategy is well use the 3 Ghost Reaper & Winter Cherries in the Extra to get rid of whatever strong cards in your opponent's Extras. You can use any cards you'd like(depend on the meta) to get rid of some boss like: Dragoons, Crystrons, etc.