
(As a Siege enters, choose an opponent to protect it. You and others can attack it. When it's defeated, exile it, then cast it transformed.)
When this Siege enters, reveal any number of Dragon cards from your hand. When you do, this Siege deals X plus 2 damage to any other target, where X is the number of cards revealed this way. (X can be 0.)
FlyingFlyingCan only be blocked by creatures with flying or reach., trampletrampleExcess combat damage it deals to a blocker carries over to the player or planeswalker it's attacking.
Whenever a Dragon you control attacks, it deals 2 damage to any target.
Hover an underlined rule to see what it means.
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.