The initial mana cost of the card uses white mana
Silumgar's Command is great with four separate options, three of which are card advantage, and fourth of which often is
Payment by Buyer 18.1 At that same time that a prospective Buyer registers to bid he or she must give the Company his or her name and address and, if requested by the Company, banking or other suitable references or identification and an acknowledgement that they have read and agreed to be bound by these Conditions
It's a bit slow, and White doesn't have a lot of ways to ramp up to 6 mana fast
Keeping dimensions consistent allows: Easier tournament play Better accessory compatibility Simpler manufacturing Easier storage The standard Pokmon card size has worked successfully for decades
But we can expect virtually any mechanic ever printed in MTG, especially mechanics that were created for supplementary products, like Commander precons and Conspiracy sets