mtg phyrexia all will be one all cards Commander : : Corrupting Influence (WBG) — Twenty Sided and 1 Land cards Phyrexia: All Will Be One

Wildfire This plane of fire, djinni, and efreeti has connections to both Rabiah the Infinite and to Dominaria

Two Oblivion Rings on the field can blink each other infinitely, triggering your, say, Eidolon of Blossoms until you draw your entire library

Stick to two colors at most

Wrap Up Nissa of Shadowed Boughs (Zendikar Rising) | Illustration by Yongjae Choi Animating lands not featured in every set, but is one of the many ways you can mitigate flood in Magic by making your mana base do more than tap for mana

Possibly--it would depend on the pacing of reprints compared against the rise in demand for them

Reliable shipping, consistent print quality, and clear communication make all the difference