{2}{B}{B}, Exile Reclusive Augur from your graveyard: Return another target creature card from your graveyard to the battlefield. Activate only during your turn.
Return target nonland permanent to its owner's hand. Then that player discards a card.
“The sights are terrible, but you must not look away. See them not as parts of a horror play or a tragedy, but as what they are: the truth.” —Salome, to Paul
When Recollection Revelation enters, rouse 1. (Put a +1/+1 counter on a permanent you control. If it isn't a creature, tap it and it becomes a 0/0 creature in addition to its other types.) {1}{W}, Sacrifice Recollection Revelation: Return another target artifact or enchantment card from your graveyard to your hand.
Target spell's controller manifests it. (To manifest a card, put it onto the battlefield face down as a 2/2 creature. Turn it face up any time for its mana cost if it's a creature card.)
When Recon Drone enters, you may search your library for a basic land card, reveal it, put it into your hand, then shuffle. Then if you did, put a card from your hand on the bottom of your library.
Most of Skalor's wildlife has metal as part of its biology. Some creatures found the extra defense lacking, and used the new support to grow bigger than ever before.
When Reconnaissance Expert enters, mill four cards. When Reconnaissance Expert dies, return target noncreature permanent card from your graveyard to your hand.
Destroy target noncreature permanent. Its controller may search their library for a basic land card, put that card onto the battlefield tapped, then shuffle.
Deception {U}({U}, Return an unblocked attacker you control to hand: Put this card onto the battlefield from your hand tapped and attacking.) Whenever a Pirate or Rogue you control deals combat damage to a player, rediscover a Pirate or Rogue card. (Look at the top card of your library. You may reveal it and put it into your hand if it's a Pirate or Rogue. Otherwise, put it back or into your graveyard.)
When Red-Crowned Admiral enters, create an Idol token. (It's an artifact with “{1}, Sacrifice this artifact: Put a +1/+1 counter on target creature. Activate only as a sorcery.”) Each creature you control with a +1/+1 counter on it has flying.
Redgill Corsair gets +1/+0 as long as you control an artifact. When Redgill Corsair dies, create a Treasure token.
Although they lurk at the edges of Bloodhollow territory to prey on Coralight scouts, the Redgills were unknowingly the first line of defense against the invasion of the Others.
Counter target spell. Create a Vial token. (It's an artifact with “{1}, Sacrifice this and another permanent: Draw a card. Activate only during your turn.”)