mtg cards like heartstone This effect cant reduce the mana in that cost to less than one mana. Heartstone (Premium Deck Series: Slivers)

The Advocate also fits nicely into another category of card

At one of the latter stages of casting spells a player defines its total cost: Total cost is a spells mana cost or alternative cost, plus all additional costs, plus all effects that increase mana cost, minus all effects that decrease mana cost

Great Yawgmoth, Father of Machines, saw its perfection

Crux of Fate is a noteworthy card if youre into dragons

Jeska is both a 3-drop and a Commander

Still though, a sealed booster box of this set will set you back a cool $3,000 and with good reason thanks to notable chase cards such as the eminently powerful ramping tool Grim Monolith, the Squirrel kindred powerhouse Deranged Hermit and artifact recursion machine Goblin Welder