Masques block
The Masques block is the fifth block, consisting of the large expansion Mercadian Masques () and the two small expansions Nemesis () and Prophecy (). The block was released in 1999–2000.
Sets
Mechanics
This block included the searchable Rebels and Mercenaries, Spellshapers, new cards with alternative costs, and new abilities playable by any player (i.e. Squallmonger). It introduced the keyword Fading and Rhystic magic — discounted spells and abilities that work properly unless a specified player pays a set amount of mana.
Development codenames
On the development codenames for the Masques block, MTG.com columnist Mark Rosewater wrote: