You can play one of these either as a Clearwater Pathway and be able to generate blue mana, or as Murkwater Pathway, a land that generates black mana
Currently, we are restricting these changes to digital-only cards, where there will be no conflict between a digital and printed version of a card
Olivia seems strong with all the cards that increase noncombat damage, like Solphim, Mayhem Dominus and Ojer Axonil, Deepest Might, though that may distract from the theft plan
Cyclopean Snare just taps a creature, both Puppet Strings and Icy Manipulators have better taps for less than 3 mana (one can untap creatures, the other can tap down non-creatures as well)
For the most part, this is the only color pair that cares about artifacts, so you'll be able to get the key cards from the deck mostly unimpeded
There are plenty of great removal spells just like this that can fit the flavor of any deck that wants them (Eaten Alive for a zombie deck, for example)