Caves of Koilos

Spells you cast but don't own cost 1 less to cast. Whenever one or more creatures you control deal combat damage to a player, look at the top card of that player's library, then exile it face down. You may play that card for as long as it remains exiled, and mana of any type can be spent to cast that spell.

Flying, lifelink Whenever one or more outlaws you control deal combat damage to a player, create a Treasure token. (Assassins, Mercenaries, Pirates, Rogues, and Warlocks are outlaws.) 3, Sacrifice two Treasures: Put two +1/+1 counters on each creature you control. Activate only as a sorcery.

Whenever you cast your second spell each turn, exile the top card of your library. Until the end of your next turn, you may play that card. T: Copy target instant or sorcery spell you control. You may choose new targets for the copy. Activate only if you've cast three or more spells this turn.

This spell costs 1 less to cast for each land card in your graveyard. Whenever Yuma enters or attacks, you may sacrifice a land. If you do, draw a card. Whenever a Desert card is put into your graveyard from anywhere, create a 4/2 green Plant Warrior creature token with reach.

This spell costs 2 less to cast for each different mana value among instant and sorcery cards in your graveyard. Flying, prowess Whenever you cast your second spell each turn, create a 4/4 red Dragon Elemental creature token with flying and prowess.

Menace, ward 2 If a creature you control dealing combat damage to a player causes a triggered ability of a permanent you control to trigger, that ability triggers an additional time.

Other Plants and Treefolk you control get +2/+0. At the beginning of each of your postcombat main phases, return target Plant, Treefolk, or land card from your graveyard to your hand.

Return X target outlaw creature cards from your graveyard to the battlefield. (Assassins, Mercenaries, Pirates, Rogues, and Warlocks are outlaws.)