Hydra's Impenetrable Hide

Players can't cast spells until the Hydra's next turn.

Xenagos Ascended gains trample until end of turn and attacks this turn if able.

Each player exiles a creature they control. Until the Hydra's next turn, when a Head leaves the battlefield, return the exiled cards to the battlefield under their owners' control.

Hidden agenda (Start the game with this conspiracy face down in the command zone and secretly choose a card name. You may turn this conspiracy face up any time and reveal that name.)

Whenever a creature you control with the chosen name attacks, you may pay . If you do, that creature gains indestructible until end of turn. (Damage and effects that say "destroy" don't destroy it.)

Whenever a Minotaur attacks this turn, it gains deathtouch until end of turn.

At the beginning of combat this turn, all Revelers gain haste until end of turn and attack this combat if able.