msem-instigator

Enchantment spells you cast cost {1} less to cast.
Enchantment creatures and enchanted creatures you control get +1/+1.

Enspirit (As you cast this spell, you may exile a nonenchantment creature you control until this leaves the battlefield or fails to resolve. Reduce this spell's cost by the exiled card's mana value.)
Zoulev Envoy can't be blocked.

Whenever an enchantment enters the battlefield under your control or Zoulev Ritualist becomes enspirited, draw a card.

Menace
When Zygos's Decimators enters the battlefield, put a number of +1/+1 counters on it equal to your devotion to black. (Each {B} in the mana costs of permanents you control counts toward your devotion to black.)

Zygos, Underworld Scourge's power and toughness are each equal to the number of cards you own in exile and in your graveyard.
Spells you cast have “As an additional cost to cast this spell, you may exile any number of cards from your graveyard. This spell costs {1} less to cast for each card exiled this way.”

Archive 5 (As this enters the battlefield, shuffle the top five cards of your main library into a new face up library. Sacrifice this after the archived library is empty.)
Once during each combat phase, you may cast the top card of the archived library as though it had flash.