I'll be updating this more as I go, I'm working on a couple other themes to discuss that I like to play. I've eluded to a few of them and since I really like Rock Defiance I thought it best to start with Constructs since they can be an obscure approach to playing Rock Defiance. With a lot of the techniques figured out with Spare Parts the playstyle lends itself to many other modules to be built in. Either as a main option or a supporting module; Nora Gem, Ravish, Phylactery, and factions with racial manipulation are great for Spare Parts. Technically speaking IS/X split faction has a Rock Defiance Module that each split can have worked into. Spare Parts is not always the source of Rock Defiance however. Since Spare Parts is an IS spell I decided to go from here and work my way out to other modules that can replace or work alongside Spare Parts to grant Rock Defiance to other units. While Spare Parts can be cast on any Construct and Rock Defiance is only on two, it happens to be that the two units with Rock Defiance (Groble & Earth Golem) are great examples of how to spread an ability or abilities via Spare Parts. It helps with the example that both have the same ability but on different upgrade lines. Many Constructs have similar abilities on either U1 or U2 and so the example of Rock Defiance can be applied to those units as well, however those abilities such as Resistance: Physical are more widespread and can be applied by more units. Spare Parts(25): AE3: Friendly Constructs gain Bestow Bestow: When this champion is Destroyed, the closest friendly champion gains this units first upgrade ability. If that champion shares a race with this one, that Champion gains the second Upgrade ability as well. Rock Defiance: When this unit is successfully attacked, this unit and other friendly units within 5 spaces with this ability has +1 DMG for 3 turns and gains 1 MAX HP permanently. It takes a bit of time to weigh out which runes should be in your bg and it really comes down to play style. At the end of the day most won't play Rock Defiance and so I can't speak for the power level that other bgs may have, however not relying on only Rock Defiance and being less obvious for the opponent will play into your favor more than only trying to Bestow Rock Defiance with Groble or Earth Golem. If played in a FF bg or with more Constructs than other units Spare Parts should easily be able to Bestow upgrades from one Construct to the next. If you control the tide of the battle more often then not it is very easy to Super Champ and create big waves that the opponent can't get back from. Spare Parts playstyle is very much like waves in the water. Advancing only to have those units be destroyed so that the next advancing units enter with more abilities and have a larger presence on the field. Even when you advance a unit for it to Super Champ the tide of the battle quickly slingshots forward when you have a Super Champ unit surrounded by so many constructs with Bestow.