I’ve been working on this on and off for a while now. Basically, I conceived of iconography to represent a bunch of Magic: The Gathering two-card combos as simple, icons that represent a pleasant to look at image that also had that secondary meaning.
And here’s what I got so far:
First up, Painter Grindstone. Available here.
Second up, Channel Fireball, available here.
And finally, Vault-key, available here.