Annihilator comes with a number (for example, annihilator 2), and when the creature with annihilator attacks, the defending player must sacrifice a number of permanents equal to the number associated with annihilator
Even three color decks can survive without them if built with a good mana base, mana rocks, and treasure
For all people playing in a team sealed event, I strongly encourage you to practice deckbuilding with your team and drafting to see how the archetypes best expressions lookthats what Ill be doing all of this week
What is the best/most valuable card in Mirage
Wrenn and Seven is an exceptional ramp tool, scooping up land cards from your deck and then placing them directly on the field
A good all round card that fits quite nicely into the archetype although probably in a removal/disruption slot rather than anything else