Tablet of Discovery
Red rarely touches card advantage without a caveat, and this artifact answers that structural gap by borrowing the graveyard-as-second-hand trick red has always resorted to: mill a card off the top, then play it before the turn ends. The wrinkle is that "play that card this turn" is a use-it-or-lose-it window, so the effect is impulse-draw wearing a mill costume. You are not building a graveyard here; you are peeking at your own top card and getting one shot to cast it, which rewards a deck that can convert whatever falls off, be it land, spell, or creature. The mana side is where the artifact earns its keep past that one-time trigger. It taps for a single red as baseline, but the second mode produces a doubled red restricted to instants and sorceries, quietly nudging the artifact toward spellslinger shells rather than generic ramp. That restriction is why it never reads as a mana rock with a free upside: the extra red only exists to power the burn and card-selection spells the deck already wants to cast, not to jump ahead into fatties a turn early. It is a rock that ramps you toward the exact spells that pair with its enters-the-battlefield dig, a self-contained dig-then-cast loop that leans harder on the caster's spell density than on any single powerful line.
