Cumulative upkeep—Pay 2 life. (At the beginning of your upkeep, put an age counter on this permanent, then sacrifice it unless you pay its upkeep cost for each age counter on it.) Prevent all damage that would be dealt to creatures you control.
Enchant creature Enchanted creature gets +3/+3. Whenever enchanted creature deals combat damage to a player, double its controller’s life total.
Flying When Keiga, the Tide Star dies, gain control of target creature. 5/5
Equipped creature has hexproof and haste. (It can’t be the target of spells or abilities your opponents control.) Equip {1}
Equipped creature gets +1/+0 for each artifact you control. {B}{B}: Attach Cranial Plating to target creature you control. Equip {1}
At end of combat, destroy each creature that blocked or was blocked this turn.
Buyback {2} (You may pay an additional {2} as you cast this spell. If you do, put this card into your hand as it resolves.) Scry 3. (Look at the top three cards of your library, then put any number of them on the bottom and the rest on top in any order.)
{3}, {T} or {U}, {T}: Return target creature to its owner’s hand unless its controller pays {1}.
Delirium — If a source you control would deal noncombat damage to a permanent or player while there are four or more card types among cards in your graveyard, it deals double that damage instead. When The Rollercrusher Ride enters, it deals X damage to each of up to X target creatures.
Flash Creature cards you own that aren’t on the battlefield have flash. Each opponent can cast spells only any time they could cast a sorcery. 3/4
This spell can’t be countered. Creature spells you control can’t be countered. 4/3
You may cast spells this turn as though they had flash. Draw a card.
6, T, Sacrifice Myr Incubator: Search your libraryfor any number of artifact cards, remove them from the game, then put that many 1/1 Myr artifact creature tokens into play. Then shuffle your library.
Search your library for up to two basic land cards, reveal those cards, and put one onto the battlefield tapped and the other into your hand. Then shuffle your library.