
Whenever a Mountain you control enters, put a quest counter on this enchantment. If it has six or more quest counters on it, sacrifice it. If you do, search your hand and/or library for a Dragon card and put it onto the battlefield. If you search your library this way, shuffle.
MountaincyclingMountaincycling, Discard this card: Search your library for a Mountain card, reveal it, put it into your hand, then shuffle.
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, Discard this card: Search your library for a Mountain card, reveal it, put it into your hand, then shuffle.)
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.