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There is nothing wrong with drafting an aggro deck, but make sure that you have at least some interaction and ways to slow the opponent down (Strip Mine, Thalia) or that your deck can do something more powerful than just cast 2-power creatures (Stoneforge + Batterskull, Phlage, planeswalker)

However, you will be able to activate abilities with in their activation costs as soon as creatures with such abilities come under your control

As the examples above show, these can represent multi-stage boss monsters or a quest and its reward

Why do you want the initiative

Since Omo only modifies one card at a time, this is a slow method