沉重之書

Weighty Tome is a 2-mana Mana card that generates +3 Mana. Paying 2 to gain 3 yields a net profit of 1 mana — consistent with the mana-book series pattern. It occupies the second rung of the mana staircase (0 → 1 → 2 → 3...) and bridges the gap between early mana establishment and high-cost finisher cards.

• Effect: Mana +3
• Mana Cost: 2
• Color: Purple (Mana)

Weighty Tome qualifies as a Tome for Magic Wand's evolution into Holy Wand.

• Mana Syphon: Permanent mana per card played grows faster when every rung of the mana staircase is filled. Weighty Tome contributes two plays' worth of stacking per turn.
• Chain Link: As the cost-2 link in the chain, Weighty Tome keeps combos connected between cost-1 mana books and cost-3 finishers.
• Free to Play gem: Eliminates the 2-mana cost, turning Weighty Tome into a pure +3 mana gain — one of the highest-value gem targets in the game.

Universal. One or two copies are standard in builds running cost-3 or cost-4 finishers. Essential in Arca's mana-engine builds.

Cost-2 mana bridge. The second step of the mana staircase, enabling high-cost finishers to fire every turn.

Net positive mana generation at cost 2 is universally applicable. One to two copies per deck is the standard configuration.