For Challenge # 107, to help make up for my submission gaffes. I'm kind of surprised this doesn't exist yet, to be honest.

I couldn't imagine this ability being tacked onto a 2 casting cost creature, so I tried to be friendly with the power/toughness, since I know this ability is a bit of a let down at 3. I mean, you know, Fyndhorn Elder. I don't know... maybe this would have been fine as a 1/1 for .

I also thought to add this line to the creature:

": ~ gets +20/+20 until end of turn."

As an outlet for what you could do with all the excess mana you keep storing up. But it distracted from the focus of the card, so I removed it.

Mmm. Sakura-Tribe Springcaller's approach was to be a more decent-sized creature (and to not require tapping since you don't need it so much if the mana doesn't drain).

True, but the mana from the springcaller emptied at end of turn. Not tapping does make sense, though...

I think the trouble with this is remembering -- a couple of existing cards got away with it because they were really splashy, so it was natural to remember how much extra mana there was (if any), but this looks mostly like a small utility creature, I feel like it's going to produce "wait, did I save some mana" moments...?

Yeah. The other problem is that this could just be expressed with charge counters, which occurred to me after I made the card. I still think a one-shot mana that doesn't leave your pool makes sense... but it probably makes more sense as a sorcery, that adds once. And it could sure use some counters in the token slot to help with the memory issues.

It's a shame, really, that Wizards doesn't take advantage of that token slot more to print occasional things the game could use. "One white mana in your pool." would make a pretty good token. So wouldn't "Doesn't untap during the next untap step." and "Pact of Negation trigger."