Id want to make Tahngarth tougher to kill, so Darksteel Plate is a fine choice
Ashnod the Uncaring Ashnod the Uncaring is a powerful Grixis commander that cares about sacrifice outlets, effectively doubling the benefit they provide with a given activation
Attunement (Ext, S) You'll notice that there are a few cards on this list which net you fewer cards than you started with
For example, when working on Magic Origins , I made sure that Harbinger of the Tides was a "Merfolk!," not because of anything in Standard, but because it was a card I wanted to aim at a Merfolk deck in Modern and Legacy
I guess you can keep waiting, but the Allies hype is already dying down, so there's a very realistic possibility that you'll have to bite the bullet and take a loss even though the card shot up 400 percent overnight