Uvilda, Dean of Perfection // Nassari, Dean of Expression
Two deans, two theories of where cheap spells come from, and the modal frame lets you pick the one that fits the game in front of you: you commit to a side when you play the card, not before. Uvilda front-loads the plan. Tap her to stash one of your own high-cost instants or sorceries under three hone counters, tick one off each upkeep, and cast the card on the third turn for four generic less. The tension is the wait: you prepay with a card and three turns of tempo to buy a discount, which only pays on spells expensive enough that four mana matters and safe enough to telegraph three turns out. Nassari inverts the premise entirely. Instead of committing your own hand, she exiles the top card of each opponent's library every upkeep and lets you cast those spells, with color fixing folded in so their off-color pips never block you, and she fattens with a +1/+1 counter each time you fire one. One dean asks you to lock into a plan and let it mature; the other asks you to improvise with whatever the opponents happen to reveal, patience against opportunism. Both are fragile 2/2 legends whose whole value lives in the tap or the upkeep trigger, so the removal math is blunt: kill the dean, and the engine dies with her.
Rules text
: You may exile an instant or sorcery card from your hand and put three hone counters on it. It gains "At the beginning of your upkeep, if this card is exiled, remove a hone counter from it" and "When the last hone counter is removed from this card, if it's exiled, you may cast it. It costs 
less to cast this way."
//
At the beginning of your upkeep, exile the top card of each opponent's library. Until end of turn, you may cast spells from among those exiled cards, and you may spend mana as though it were mana of any color to cast those spells.
Whenever you cast a spell from exile, put a +1/+1 counter on Nassari.
