If Three Tree Scribe leaves the battlefield without dying at the same time one or more other creatures you control leave the battlefield without dying, its ability will still trigger once for each of those creatures, including itself
What makes it so powerful is how well it fits into spell-heavy decks, especially those packed with cantrips, looting effects, and cheap interaction
I thought, as this is a design column, that I'd take a look at some early card designs (many years prior to Commander and Conspiracy ) that were created specifically with multiplayer in mind
It provides us at the beginning of our upkeep, with draw X cards, where X is the number of Zombies we control (with the downside of also losing X life)
You can make all the rare cards powerful. But thats poisonous, right
Additionally, Emry possesses the immensely useful capability of reducing her own mana cost by one mana for each artifact you control