Epic

Epic is a keyword ability that changes the rules for playing spells for the player that plays the epic spell. When an epic spell resolves, it restricts the player who played it from playing anymore spells for the rest of that game. The keyword was introduced in Saviors of Kamigawa and has appeared on the following five spells:

Endless Swarm, Enduring Ideal, Eternal Dominion, Neverending Torment and Undying Flames.

Things you can do while an Epic spell is in play

The following are things you can still do while an Epic spell is in play:

• You still have all phases, which means you will still untap, draw...
• You can still lay lands.
• You can cycle cards as this isn't playing spells. Some cycleing actually triggers something on the cycled card (i.e. when Decree of Pain is cycled, all creatures get -2/-2 until end of turn.
• You can use activated abilities on permanents of yours that are in play.

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Further references may be found in the Comprehensive Rules.