Izzet Affinity is a Painter's Servant plus Grindstone combo deck that can also win with Goblin Welder recursion and Fable of the Mirror-Breaker value, and they pack heavy sideboard hate in Blood Moon, Disruptor Flute, and Pyroblast. Grafdigger's Cage shuts down Goblin Welder's recursion ability, denying them their primary engine for recovering after disruption, while Abrade kills Painter's Servant, Grindstone, and Goblin Welder directly. Consign to Memory answers resolved Ugin activations and stops Urza's Saga tokens from becoming overwhelming. Race them as often as possible since they can present their own fast kills, and be wary of their post-board Blood Moon — your two basic Islands and basic Mountain give you outs to play through it.