Dragons of Tarkir — Rare
Silumgar's Command rulings:
2/25/2015 : You choose the two modes as you cast the spell. You must choose two different modes. Once modes are chosen, they cant be changed.
2/25/2015 : You can choose a mode only if you can choose legal targets for that mode. Ignore the targeting requirements for modes that arent chosen. For example, you can cast Ojutais Command without targeting a creature spell provided you dont choose the third mode.
2/25/2015 : As the spell resolves, follow the instructions of the modes you chose in the order they are printed on the card. For example, if you chose the second and fourth modes of Ojutais Command, you would gain 4 life and then draw a card. (The order wont matter in most cases.)
2/25/2015 : If a Command is copied, the effect that creates the copy will usually allow you to choose new targets for the copy, but you cant choose new modes.
2/25/2015 : If all targets for the chosen modes become illegal before the Command resolves, the spell will be countered and none of its effects will happen. If at least one target is still legal, the spell will resolve but will have no effect on any illegal targets.