Whenever you cast a spell, copy it and you may choose new targets for the copy. Then balance a card from outside the game on one of your fingertips. When that card falls or touches another card, sacrifice Plate Spinning.
As Psychic Allergy enters, choose a color. At the beginning of each opponent's upkeep, Psychic Allergy deals X damage to that player, where X is the number of nontoken permanents of the chosen color they control. At the beginning of your upkeep, destroy Psychic Allergy unless you sacrifice two Islands.
Whenever a player chooses one or more targets, each player reveals the top card of their library. The player who reveals the card with the highest mana value may change the target or targets. If two or more cards are tied for highest, the target or targets remain unchanged. Changing targets this way doesn't trigger abilities of permanents named Psychic Battle.
{U}: Quicksilver Elemental gains all activated abilities of target creature until end of turn. You may spend blue mana as though it were mana of any color to pay the activation costs of Quicksilver Elemental's abilities.
Return target creature to its owner's hand. You may search your library and/or graveyard for a card named Ral, Caller of Storms, reveal it, and put it into your hand. If you search your library this way, shuffle.
At the beginning of your upkeep, you may put a verse counter on Recantation. {U}, Sacrifice Recantation: Return up to X target permanents to their owners' hands, where X is the number of verse counters on Recantation.
Return up to two target creatures to their owner's hand. Search your library and/or graveyard for a card named Mu Yanling, reveal it, and put it into your hand. If you searched your library this way, shuffle.
You may play cards as though they were other cards of your choice with the same mana cost. You can't choose the same card twice. (Mana cost includes color.)
{2}{U}{U}, Sacrifice Riptide Shapeshifter: Choose a creature type. Reveal cards from the top of your library until you reveal a creature card of that type. Put that card onto the battlefield and shuffle the rest into your library.
Whenever River Kelpie or another permanent enters from a graveyard, draw a card. Whenever a player casts a spell from a graveyard, draw a card. Persist