msem-instigator

Flash
When Rahstahde Truthseeker enters, create a Treasure token. (It's an artifact with “{T}, Sacrifice this artifact: Add one mana of any color.”)

Haste
Whenever you cast a noncreature spell, put a +1/+1 counter on Rahstahde's Firefist. It gains menace until end of turn.

Haste
At the beginning of each end step, put a +1/+1 counter on Rahstahde's Swiftspear if you cast a noncreature spell this turn.
Surpass {5}{R} ({5}{R}: Transform this creature. This costs {1} less to activate for each counter on it. Activate only as a sorcery.)

(Add a quest counter as this enters. Sacrifice after 3.)
Whenever you attack, add a quest counter.
1, 2 — Tap target creature an opponent controls.
3 — Create two 1/1 white Spirit creature tokens with flying.
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(Add a quest counter as this enters. Sacrifice after 3.)
Whenever you attack, add a quest counter.
1, 2 — Create a Treasure token.
3 — Create a tapped and attacking 5/5 red Dragon creature token with flying. Exile it at the beginning of the next end step.
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(Add a quest counter as this enters. Sacrifice after 3.)
Whenever you attack, add a quest counter.
1, 2 — Mill two cards.
3 — Return up to two target creature cards from your graveyard to your hand.
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(Add a quest counter as this enters. Sacrifice after 3.)
Whenever you attack, add a quest counter.
1, 2 — Untap target creature or land you control.
3 — Create two 2/2 green Wolf creature tokens.
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(Add a quest counter as this enters. Sacrifice after 3.)
Whenever you attack, add a quest counter.
1, 2 — Scry 1.
3 — Draw two cards.
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Raider's Den enters tapped.
{T}: Add {R}.
{R}, {T}: Target creature you control gains menace until end of turn. Activate only as a sorcery and only if you control a red creature.

Revive {3}{G} ({3}{G}, Exile this card from your graveyard: Create a token that's a copy of it except it has no mana cost. Revive only as a sorcery.)

When Raikai Seafarer enters, you may search your library for up to three cards named Raikai Seafarer, reveal them, put them into your hand, then shuffle.

({T}: Add {G} or {U}.)
Rainforest Spring enters tapped.

I — Search your library for a basic land card, reveal it, put it into your hand, then shuffle.
II — You may put a land card from your hand onto the battlefield.
III — Lands you control gain “{T}: Add one mana of any color” until end of turn.

Raintouched Basin enters tapped.
{T}: Add {U}.
Desertcycling {1}{U} ({1}{U}, Discard this card: Search your library for a Desert card, reveal it, and put it into your hand, then shuffle.)

Target creature you control gets +2/+2 until end of turn and must be blocked this turn if able.

Create two 1/1 white Soldier creature tokens.

Pressure {1}{G} (You may cast this spell for its pressure cost if seven or more cards are in your graveyard.)
Search your library for three basic land cards and reveal them. Put one onto the battlefield tapped, one into your hand, the rest into your graveyard, then shuffle.

Art of war — At the beginning of your end step, if Raiun Bay Junk dealt damage to an opponent this turn, put a +1/+1 counter on it.
Tap an untapped creature you control: Raiun Bay Junk becomes an artifact creature until end of turn.

All creatures able to block Raiun Bay Merchant do so.

Art of war — At the beginning of your end step, if Raiun Bay Scourge dealt damage to an opponent this turn, gain control of target artifact or enchantment until Raiun Bay Scourge leaves the battlefield.

Rakkiri Archer gets +0/+1 and has reach as long as it's embattled. (A creature is embattled if it has a counter on it or has a permanent you control attached to it.)

When Rakkiri Aspirant enters, if you control an embattled creature, exile the top card of your library. Until end of turn, you may play that card. (A creature is embattled if it has a counter on it or has a permanent you control attached to it.)

Rakkiri Initiate gets +0/+2 as long as it's embattled. (A creature is embattled if it has a counter on it or has a permanent you control attached to it.)

Rakkiri Pathblazer gets +2/-1 as long as it's embattled. (A creature is embattled if it has a counter on it or has a permanent you control attached to it.)

Rakkiri Piker has double strike as long as it's embattled. (A creature is embattled if it has a counter on it or has a permanent you control attached to it.)