Vedalken Orrery

Flash, sold as a permanent. The interesting design wrinkle is that it grants the timing keyword not to a single spell but to every spell you cast, which rewrites your entire deck's relationship to the turn structure. Sorceries become reactive. Enchantments and artifacts drop in on an opponent's end step. Most importantly, it lets you hold up mana for counterspells and removal while still developing your board the instant a window opens, collapsing the old tension between proactive and reactive play. That collapse is the appeal: a deck that can do everything at instant speed never has to commit to a plan during its own turn, which is a genuine information and tempo advantage. The cost is that it is inert on arrival and inert if you have no spells worth holding back; it is pure enablement, an axis-shifter that demands a board state worth manipulating before it pays out. Effects that change when you act rather than what you can do are a category Magic has stayed deliberately stingy with, because instant-speed-everything warps how a format's interaction math works. Leyline of Anticipation later offered the same grant on an enchantment, free if it starts in the opening hand but otherwise the same four to deploy. The artifact body keeps this one relevant where a deck wants a colorless version of the effect, recurrable through the graveyard and reachable by the tutors and reanimation that artifacts open up rather than enchantments.