I think this concept has a nice parallel to prices on MTGO
There are not that many answers to this problem for decks not designed to handle it
If the target player is an illegal target when Splinter's last ability tries to resolve, it won't resolve and none of its effects will happen
Brawl Not Legal Vintage Legal Timeless Not Legal Commander Legal Pauper Legal Oathbreaker Legal Penny Not Legal Toolbox Notes and Rules Information for Amoeboid Changeling: If a creature loses all creature types but then gains a new creature type later in the turn, it will be that new creature type
The free tier gives you 15 product alerts, which covers most of the expensive cards in a typical deck
Horde of Notions, notably originally printed in Lorwyn, isnt an incredibly powerful Commander by any means, but it does give five-colored Elementals a home