When this creature enters, look at the top three cards of your library. You may reveal an instant or sorcery card from among them and put it into your hand. Put the rest on the bottom of your library in any order.

Delve (Each card you exile from your graveyard while casting this spell pays for {1}.)

Whenever you cast an instant or sorcery spell, create a 1/1 blue Bird Illusion creature token with flying.

Draw a card, then draw cards equal to the number of cards named Accumulated Knowledge in all graveyards.

Target creature gets -3/-0 until end of turn. Target creature gets -0/-3 until end of turn.

Draw three cards, then put two cards from your hand on top of your library in any order.

Breath Weapon deals 2 damage to each non-Dragon creature.

Counter target spell.

Exile all creature cards from target player's graveyard. You gain 3 life for each card exiled this way.

Counter target instant spell.

Lightning Bolt deals 3 damage to any target.

Search your library for an instant card or a card with flash, reveal it, put it into your hand, then shuffle. Flashback {5}{B} (You may cast this card from your graveyard for its flashback cost. Then exile it.)

Skred deals damage to target creature equal to the number of snow permanents you control.

If you control a Swamp, you may pay 4 life rather than pay this spell's mana cost. Destroy target nonblack creature. It can't be regenerated.

This land enters tapped. When this land enters, exile target player's graveyard. {T}: Add {B}.

({T}: Add {U} or {B}.) This land enters tapped.

{T}: Add {C}. {T}, Sacrifice this land: Search your library for a basic Island, Swamp, or Mountain card, put it onto the battlefield tapped, then shuffle. Cycling {U}{B}{R} ({U}{B}{R}, Discard this card: Draw a card.)

({T}: Add {U}.)

({T}: Add {R}.)

({T}: Add {B}.)

Draw three cards. Islandcycling {1} ({1}, Discard this card: Search your library for an Island card, reveal it, put it into your hand, then shuffle.)