Randomly Generated Crusade and Sylvan Library. First attempt was an enchantment that read: "At the beginning of your first main step, draw two cards, then reveal two cards and put them on top of your library. // Creatures you control get +1/+1 for each card revealed in this manner they share a color with."

That looked too sticky, though. Second attempt gave me a Sorcery that read: "Draw two cards, then put two cards from your hand on top of your library. // White Creatures you control get +1/+1 until end of turn." but I don't like this version either, too simple. Still working on it.

I like this version much better. Captures both the Library and Crusade while doing it's own thing. Those costs might be too cheap, but 4 life is a lot...

Reminiscent of Crown of Convergence. Which suggests the costs are probably fine.

I know. Funny, huh? I had to be careful not to just remake Crown of Convergence in the process...

Made it a bit more confusing, a bit more powerful, a bit more like the Library, and officially a GW card, without the nasty gold border. Also, much more powerful with Rampant Growth effects. But, the card is a rare...

Last ability is phrased confusingly. I assume it's meant to be either "draw then put back" or "draw then pay 4 life"? Might need to be "Draw a card, then either put... or pay...". Pity you can't use the "Choose one" wording, but the choice needs to be made in resolution, after the draw happens.

edited. Also switched the order so the shorter phrase "pay 4 life" comes up first.