After having done Golgari, a guild chock full of golden goodies I am moving to the far end of the spectrum to Izzet, a guild which has historically had a threadbare selection of gold cards
Whenever you play a land or cast a spell, if it shares a mana value with one or more uncrossed digits in the chosen number, cross out one of those digits and draw a card
Mechanics-wise, Alliances would follow the theme of 'smaller' blocks expanding upon the major mechanics introduced in its bigger block, so we've got a bunch of tie-ins to Ice Age like snow lands and more cumulative upkeep
Silverquill, the Disputant Silverquill, the Disputant is a cheap Orzhov dragon commander that can greatly increase your spellcasting ability
The foil prices on this guy have always been resilient, ranging between $5 to $10, because every artifact deck needs one