Number 33:  Chronomaly Machu Mech is one of the more interesting XYZ Monsters out there, obviously being a Number card.  This is a Rank 5 XYZ Monster (XYZ Summoned with two Level 5 Monsters) so nothing too difficult involved there.  The immediate troubling thing here is the low 2400 attack and 1500 defense, as there are lower Rank XYZ Monsters with as much or better attack.  So we're hoping for a great effect here...once a turn by discarding an XYZ Material, you can target a Monster on your opponent's Field.  Damage is inflicted to your opponent between the difference in the selected Monsters attack versus its original attack, whether the difference be an increase or a decrease.  That's a bit of an outside-the-box burn ability right there.  Furthermore, if successful, Number 33 gains attack equal to the damage done via its own effect.  I guess that (at least in theory) explains its reasonably low attack.  It's moderately difficult to find a spot (outside of a Mech Deck) that really has a home for Number 33.  It does benefit for being a Machine, so it fits in about any Machine Deck.  I'd try various Equip Magic cards and other combos (as this is a fairly combo oriented card) that obviously lower Monster's attacks, in order to be able to get the effect, hopefully boosting this attack to 3000 or more.  But again, even in Machines, why not play something that has a stronger base attack, even here with marginal burn?

Ratings:

Traditional:  1.5/5
Advanced:   2.5/5 
Art:  5/5