
FlyingFlyingCan only be blocked by creatures with flying or reach.
When this creature enters, you may put a commander you own from the command zonecommand zoneThe area where your commander waits before you cast it, and where it may return instead of going to the graveyard, exile, your hand or library. onto the battlefield. It gains haste. Return it to the command zonecommand zoneThe area where your commander waits before you cast it, and where it may return instead of going to the graveyard, exile, your hand or library. at the beginning of the next end step.
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Read from the rules text. A card that enables a keyword makes or is the thing; a card that rewards it gets better when you have it. Two cards interact when one enables what the other rewards.