When this Siege enters, it deals 4 damage to another target battle or opponent and 1 damage to up to one target creature
They are generated via the Incubate mechanic, which gives you a non-creature artifact token with some number of +1/+1 counters on it
While this is risky, it allows him to play stronger cards for only 1 DON!!, and combined with other card effects, the player can gain a huge advantage
I also feel that Genesis Ultimatum has no Red either, it draws and puts permanents into play so it's Blue and Green
However, its backbreaking effect against control is, in reality, only the icing on the cake
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