msem-instigator

Vigilance
When Roya Ritualist enters or whenever you cast a spell, if {G}{U} was spent to cast it, draw a card, then you may put a land card from your hand onto the battlefield tapped. Put a +1/+1 counter on Roya Ritualist.

Ward {2}
Foresight — Whenever you draw your second card each turn, Royal Falconer gains flying until end of turn.

First strike
Prevent all noncombat damage that would be dealt to Royal Knight.

When Royal Retriever enters or when a creature you control scavenges it, you may discard a card. If you do, draw a card.
Scavenge {R} ({R}, Exile this card from your graveyard: Put a number of +1/+1 counters equal to this card's power on target creature. Scavenge only as a sorcery.)

Royster Hounds can't be blocked by creatures with power 2 or less.

When Rubble Seer enters, you may sacrifice a land or exile a land card from your graveyard. If you do, exile the top card of your library. Until the end of your next turn, you may play that card.

Flying
If a +1/+1 counter would be put on a creature you control, you may instead put your choice of a flying counter, a vigilance counter, or a trample counter on it.

As long as you control another artifact, Ruin Guardian gets +1/+1.

Whenever you cast a cryptic spell, creatures you control get +1/+1 until end of turn. (Artifacts, enchantments, and modal spells are cryptic.)

{1}, Sacrifice Ruinous Proselyte: Destroy target artifact or nonbasic land.

Ruins Pack gets +2/+2 as long as you sacrificed a permanent this turn.

When Ruler of Cities enters, you may search your library for an Aura that could enchant a land you control, reveal it, put it into your hand, then shuffle.
Whenever an Aura becomes attached to a land you control, you gain 2 life.

When Rum Guzzler enters, forebode, then you lose 1 life. (Create a tapped colorless Omen artifact token with “{T}, Discard a card, Sacrifice this artifact: Draw a card.”)

When Rune-Scribe's Apprentice enters, target player mills four cards.

Whenever you cast a noncreature spell, Runeclad Seeker gets +1/+1 until end of turn. If that spell was an Aura or Equipment spell, put a +1/+1 counter on Runeclad Seeker instead.

When Runed Servitor dies, each player draws a card.

Lifelink
When Runic Soulthief enters, target player loses X life and you gain X life, where X is the number of enchantments you control.

Flying
When Rushwater Hunter enters, you may return target creature to its owner's hand.

When Russet Denmother enters, choose one —
• Destroy target enchantment.
• Create a 2/1 red and white Fox creature token.

Deathtouch
Whenever Ruststep Centipede deals combat damage to a player, you may destroy target artifact or enchantment that player controls.

Whenever another creature with power 4 or greater you control attacks, Ruthless Brawler deals 1 damage to defending player.

When Ruthless Conscript dies, arm up to two target creatures you control. (Create a colorless Equipment artifact token with “Equipped creature gets +1/+0” and equip {2}, then attach it to that creature.)

{2}{R}: Ruthless Mastiff gets +3/+0 until end of turn.

Whenever a Survivor you control dies, target creature you don't control gets -1/-1 until end of turn.

Whenever another creature you control dies, put a +1/+1 counter on Ruthless Weichafe and you lose 1 life.
Whenever Ruthless Weichafe attacks, if its power is 4 or greater, it gains lifelink until end of turn.