Flash
When Protective Detective enters, another target creature you control gets +2/+2 until end of turn.
Undercover

Whenever you draw a card, you gain 1 life.
{2}{W}{U}: Draw a card.

Amity — This spell costs {R} less to cast if you attacked with exactly two creatures this turn.
When you cast your next instant or sorcery spell this turn, copy it. You may choose new targets for the copy.

{U}: Psychohopper gains flying until end of turn.
{2}{G}: Psychohopper gets +2/+2 until end of turn. Activate only once each turn.

Destroy target artifact. Pull the Wires deals 2 damage to that artifact's controller.

Tap up to two target nonland permanents. They lose all abilities until your next turn.

When this Rift enters or is traversed, destroy target tapped creature an opponent controls.
Traverse 6

Revolt — When Pureheart Cavalier enters, if a permanent you controlled left the battlefield this turn, create a 1/1 red Soldier creature token.

Haste
When Pursued Snowrunner enters, look at the top six cards of your library. You may reveal a Yeti card from among them and put it into your hand. Put the rest on the bottom of your library in a random order.

Flash
Whenever you cast a blue noncreature spell, you may draw a card. If you do, discard a card unless you pay {2}.

Enchant creature
Enchanted creature can't attack and can't traverse Rifts.
Sacrifice Quarantine: You gain 3 life.

First strike
Other creatures you control have protection from mana value 3 or greater.

Quell Dissent deals 3 damage to target creature. If that creature is legendary and/or a Rebel, Quell Dissent deals 5 damage to it instead.

Equipped creature gets +2/+0.
Equipped creature has first strike as long as it's attacking.
Equip {2}

Flash
When Quickdraw Pistol enters, you may attach it to target creature you control.
Equipped creature gets +2/+0.
Equip {2}

Whenever you attack, up to X target creatures can't block this turn, where X is the number of differently named Shrines you control.

Choose a creature type. Create a 1/1 red creature token with haste of the chosen type.
Choose a creature type. Create a 1/1 green creature token with trample of the chosen type.

When Raid Caller enters, create a Weapon token.

Search your library for a creature card with haste or dash, reveal it, put it into your hand, then shuffle.

When Rallying the Revolutionaries enters, draw a card.
Activated abilities of creatures you control cost up to {2} less to activate. This effect can't reduce the mana in that cost to less than one mana.

Target creature you control deals damage equal to its power to target creature you don't control. If the creature you control has trample, excess damage is dealt to that creature's controller instead.

Creatures you control get +1/+0 and gain haste until end of turn.
Maneuver

Rampant Fanaticism deals damage equal to the number of creatures you control to target creature or planeswalker.

Each player sacrifices a creature.
As long as a creature card or creature token was put into your graveyard from anywhere this turn, Rank and Defile has flashback {2}{B}.

Put a -1/-1 counter on up to one target creature. All other creatures get -1/-1 until end of turn.