Playing a card this way follows the normal rules for playing the card. You must pay its costs, and you must follow all applicable timing rules. For example, if one of the cards is a creature card, you can cast that card only during your main phase while the stack is empty.
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wotc
Under normal circumstances, you can play a land card exiled with Commune with Lava only if you haven't played a land yet that turn.
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wotc
The cards are exiled face up.
25-02-2015
wotc
Any cards you don't play will remain exiled.
Random a card of Magic: The Gathering (MTG), but you can also roll the D20 dice, random a Planeswalker, have fun with the random rules and more.