"The moths of Eiganjo were once no different from any other great beast of Kamigawa's wilds. It took years of patience and dedication to convince them to bear riders." —History of the Empire
Enchant player Spells you cast that target enchanted player cost {1} less to cast. At the beginning of enchanted player's upkeep, that player loses 1 life and you gain 1 life.
Hexproof, indestructible Insidious Mist can't block and can't be blocked. Whenever Insidious Mist attacks and isn't blocked, you may pay {2}{B}. If you do, transform it.
When Invasion of Alara enters, exile cards from the top of your library until you exile two nonland cards with mana value 4 or less. You may cast one of those two cards without paying its mana cost. Put one of them into your hand. Then put the other cards exiled this way on the bottom of your library in a random order.
When Invasion of Arcavios enters, search your library, graveyard, and/or outside the game for an instant or sorcery card you own, reveal it, and put it into your hand. If you search your library this way, shuffle.
When Invasion of Gobakhan enters, look at target opponent's hand. You may exile a nonland card from it. For as long as that card remains exiled, its owner may play it. A spell cast this way costs {2} more to cast.
When Invasion of Ikoria enters, search your library and/or graveyard for a non-Human creature card with mana value X or less and put it onto the battlefield. If you search your library this way, shuffle.
When Invasion of Ixalan enters, look at the top five cards of your library. You may reveal a permanent card from among them and put it into your hand. Put the rest on the bottom of your library in a random order.
When Invasion of Kaldheim enters, exile all cards from your hand, then draw that many cards. Until the end of your next turn, you may play cards exiled this way.