the mind > will > intention > planning > plotting > [adverb]
plottinglya1651
intriguingly1741
contrivingly1748
schemingly1895
1895 I. K. Funk et al. Standard Dict. Eng. Lang. II.Schemingly, adv., in a scheming manner; like a schemer.
1979 Summary of World Broadcasts Pt. 3: Far East (B.B.C.) 15 June FE/6142/A3/1 They schemingly proposed changing the venue of and delaying the sixth session of the non-aligned conference.