Whenever you cast a spell that targets Rathomar Harrier, choose one. If Rathomar Harrier is attacking, choose both instead.
• Tap target creature you don't control.
• Create a 2/2 green Wolf creature token.

Whenever you cast a spell that targets Rathomar Herder, choose one. If Rathomar Herder is attacking, you may choose both instead.
• Create a 1/1 white Human creature token.
• Creatures you control get +1/+0 until end of turn.

Haste
Whenever you cast a spell that targets Rathomar Raider, target creature can't block this turn.

Rattling Soundvein enters tapped.
When Rattling Soundvein enters, you may pay 1 life. If you do, add one mana of any color other than red.
{T}: Add {R}.

Drop — When Rave Mastermind enters, target player discards a card. If you didn't cast any creature spells during your last turn, that player discards two cards instead. Put each land card discarded this way onto the battlefield tapped under your control.

Raze the Streets deals 4 damage to any target.
{2}, Discard Raze the Streets: Search your library for a basic Mountain card, reveal it, put it into your hand, then shuffle.

When Reaching Remnant enters, it deals 4 damage to target creature with flying you don't control.
Spellcharge 3

{T}: Add one mana of any type.
{T}, Sacrifice two permanents named Reactor Sphere: Draw three cards.

Choose one —
• Draw three cards.
• Return up to two target creatures to their owners' hands.

Draw three cards, then discard a card.
If it's not an extra turn and you've amped it up twice this turn, take an extra turn after this one.
Exile Real Virtuality.

Flying
Whenever one or more creatures you control deal combat damage to a player, that player mills two cards.

Whenever Reaper of Fields attacks, bless target land.

Choose one or both —
• Destroy target artifact.
• Put a +1/+1 counter on target creature you control.

Whenever Reborn Apostle attacks, each player loses 1 life.

Lifelink
When this creature transforms into Reborn Follower, put a +1/+1 counter on target creature.

Whenever this creatures transforms into Reborn Herald or another permanent you control transforms, create a 1/1 colorless Cyborg artifact creature token.
Reborn Herald gets +1/+1 for each other artifact you control.

Choose one or both —
• Return target creature to its owner's hand.
• Return a creature with the greatest power or tied for the greatest power to its owner's hand.

Choose one —
• Draw two cards.
• Put a +1/+1 counter on target creature, scry 1, then draw a card.

Target creature gets +3/+2 until end of turn. Teach it trample.

Return target artifact or creature card from your graveyard to the battlefield.
Flashback—{3}{B}, Sacrifice a creature.

When Reconnaissance Agent enters, you may choose one —
• Exile target card from your graveyard.
• Exile another target creature.
When Reconnaissance Agent leaves the battlefield, return the exiled card to its owner's hand.

Whenever Recurring Visions enters or you cast a spell which had its flashback cost paid, surveil 3.

Mill a card. Put a +1/+1 counter on up to one target creature. Exile up to one target card from a graveyard. You gain 1 life.
Flashback {1}{G}

{T}, Sacrifice Redeveloped Cityscape, Exile a card from your hand: Search your library for two basic land cards, reveal those cards, put one onto the battlefield tapped and the other into your hand, then shuffle.

Reduce to Ore deals 5 damage to target creature. If a Ruin dealt damage this way would die this turn, instead exile it and you create two Treasure tokens.