Soul Diviner

An engine that turns a counter subtheme into cards in hand, and its cost is that it feeds on your own investments. Every counter type qualifies: a planeswalker's loyalty, the +1/+1 boosts on a creature, charge counters on an artifact, whatever markers happen to be sitting on a land. Tap it, peel one away, refill your grip. The catch is that most of those counters are doing something you wanted to keep. Cannibalizing planeswalker loyalty to draw a card is a real decision, not a free one, and that is where the two-mana body earns its rate: it reads as pure value only if you have a stockpile you are willing to spend down. It works cleanest alongside proliferate and other counter-generators, where the counters become fungible fuel rather than a resource you are attached to, which makes it less a standalone card than the payoff sitting at the end of an engine. Left to its own devices it does nothing, since it removes counters you supply rather than manufacturing its own; the reward scales exactly with how deep your counter subtheme runs, and it asks you to build toward that depth rather than splash it.