When Reflector Mage enters the battlefield, return target creature an opponent controls to its owner’s hand. That creature’s owner can’t cast spells with the same name as that creature until your next turn.

{1}{R}{G}: Relentless Hunter gets +1/+1 and gains trample until end of turn.

When Relief Captain enters the battlefield, support 3. (Put a +1/+1 counter on each of up to three other target creatures.)

Target opponent loses 5 life unless that player discards two cards or sacrifices a creature or planeswalker. Repeat this process once.

Return up to two target creatures your opponents control to their owners’ hands. Target player draws two cards.

Devoid (This card has no color.)

Search your library for a basic land card and reveal it. You may put that card onto the battlefield tapped if you control a land named Wastes. Otherwise, put that card into your hand. Then shuffle.

Ruins of Oran-Rief enters the battlefield tapped.

{T}: Add {C}. ({C} represents colorless mana.)

{T}: Put a +1/+1 counter on target colorless creature that entered the battlefield this turn.

When Saddleback Lagac enters the battlefield, support 2. (Put a +1/+1 counter on each of up to two other target creatures.)

Devoid (This card has no color.)

When Scion Summoner enters the battlefield, create a 1/1 colorless Eldrazi Scion creature token. It has “Sacrifice this creature: Add {C}.” ({C} represents colorless mana.)

{T}: Add {C}. ({C} represents colorless mana.)

{2}{C}, {T}: Draw a card. Activate only if you have no cards in hand.

Destroy target attacking or blocking creature with power 2 or less.

Reach

When Seed Guardian dies, create an X/X green Elemental creature token, where X is the number of creature cards in your graveyard.

{T}: Add {C}.

{2}, {T}: Scry 1. (Look at the top card of your library. You may put that card on the bottom of your library.)

Support 2. (Put a +1/+1 counter on each of up to two target creatures.)

Draw a card.

Devoid (This card has no color.)

Whenever another nontoken creature you control dies, create a 1/1 colorless Eldrazi Scion creature token. It has “Sacrifice this creature: Add {C}.” ({C} represents colorless mana.)

Devoid (This card has no color.)

Flying

Whenever you cast a colorless spell, Sky Scourer gets +1/+0 until end of turn.

Devoid (This card has no color.)

{C}: Slaughter Drone gains deathtouch until end of turn. (Any amount of damage it deals to a creature is enough to destroy it. {C} represents colorless mana.)

Devoid (This card has no color.)

Target creature can’t be blocked this turn.

Draw a card.

Sparkmage’s Gambit deals 1 damage to each of up to two target creatures. Those creatures can’t block this turn.

({C} represents colorless mana.)

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