If you pre-order less than 7 days before the release date, payment will be taken immediately upon purchase
Travis King has a great video on the topic over on Youtube
People play all sorts of Haste-enablers in Commander, why Urabrask is rarely one of them is beyond my understanding
With Hydra Omnivore, you can send attack any opponent where it will definitely get through (someone with no blockers, for example) and every opponent takes the hit
If its combo and big mana deck hate, you need to employ Disdainful Stroke
When its defeated, exile it, then cast it transformed.) When Invasion of Regatha enters the battlefield, it deals 4 damage to another target battle or opponent and 1 damage to up to one target creature