The front side would be an artifact with a cost
There have been so many games in which I am either throwing down sacrifical planeswalkers to try and stop them eating my other cards or throwing out artifacts and enchantments in the hope that they will be tempted to destroy them rather than attacking my planeswalker
Ripples of Potential introduced an option for blue decks that use counters, but blue still lacked a more universal option
(For example, auto-yielding one Hellrider does not affect another copy of Hellrider.) Per Ability (Each Match) decisions apply to every copy of the ability and persist across games within the current match, then clear when you start a new match
Ill Take the Combo to Go Vito is a great addition to Edgar Markov decks everywhere, with his ability to lower the curve of Edgar decks wanting to run the Sanguine Bond & Exquisite Blood combotheres a great run down of this in one my recent deckbuilding articles
A copy of an X-spell on the stack is a separate spell with the same X value that you paid for the original