Edwin's cards

Cycling (, Discard this card: Draw a card.)
Buyback (You may pay an additional as you cast this spell. If you do, put this card into your hand as it resolves.)
Cascade (When you cast this spell, exile the top card of your library until you exile a nonland card that costs less. You may cast that card without paying its mana cost. Put the exiled cards on the bottom of your library at random.)
Madness (If you discard this card, you may cast it for its madness cost instead of putting it into your graveyard.)

Search target opponent's library for a permanent card and put it onto the battlefield under your control.
That player searches your library for a permanent card and puts it onto the battlefield under their control.
You and that player then shuffle your libraries.

Counter target spell.
When a spell is countered this way, if it was blue, draw a card. If it was black, target player loses 2 life. If it was red, Steal Power deals 1 damage to target creature. If it was green, put a 1/1 Saproling creature token onto the battlefield. If it was white, gain 3 life.