Trample
Whenever Revolutionary Throng attacks, if you control another creature with power 4 or greater, it gets +2/+0 until end of turn.

{T}: Add {C}.
{T}: Add one mana of any color. Spend this mana only to cast legendary spells or activate abilities of legendary permanents.
{3}, {T}, Sacrifice Revolutionary's Retreat: You may return target legendary card from your graveyard to your hand.

When Revved Robo enters, you may put a +1/+1 counter on it. If you don't, it gets +2/+0 and gains haste until end of turn.

Counter target spell. Untap up to four lands.

Draw a card. If you've amped it up this turn, creatures your opponents control get -1/-0 until end of turn.

When Rib Collector enters, if it wandered, return target creature card from your graveyard to your hand.
Wander—{1}{B}, Sacrifice another creature.

Return any number of creature cards with total mana value less than or equal to twice your devotion to black from your graveyard to the battlefield.

Approval — This spell costs {X} less to cast, where X is the number of colors among permanents you control.
Exile target creature.

Search your library for a basic land card, reveal it, put it into your hand, then shuffle. Scry 1.

When Riotous Rockers enters, it deals 3 damage to up to one target that was dealt damage this turn.

Tap target creature. It can't become untapped for as long as you control a creature named Tidewake Walker.

Choose one —
• Exile target artifact or enchantment.
• Exile target creature you control, then return it to the battlefield under its owner's control. If that creature entering the battlefield causes any abilities to trigger, those abilities trigger an additional time.

Search your library for a card with flashback and exile it, then shuffle. You may cast that card this turn. At the beginning of your next end step, if that card is in exile, put it into your graveyard.
Flashback {U}{R}

Put two +1/+1 counters on target creature you control. It fights up to one target creature an opponent controls. You gain 4 life.

Target creature you control gains deathtouch until end of turn. When that creature dies this turn, create a 2/2 black Zombie creature token.

Cast this spell only during combat.
Untap all attacking creatures and tap all blocking creatures. After this phase, there is an additional combat phase.

Reach
When Roaming Treefolk enters, target creature or Ruin gets +2/+2 until end of turn.
Wander {5}{G}

Target creature gets +2/+0 and gains first strike until end of turn. It gets an additional +1/+0 until end of turn for each time you've amped it up this turn.

Whenever Rogue Justiciar becomes the target of a spell or ability you control, you may tap target creature. This ability triggers only once each turn.

Scry 2, then draw two cards. You lose 2 life.

Flash
Flying

This spell costs {X} less to cast, where X is the amount of life you have more than your starting life total
Lifelink
When Rose Garden Guardian enters, put a +1/+1 counter on each other creature you control with lifelink.

When Rotroot Hauler enters, mill three cards, then you may put a permanent card in your graveyard on top of your library.

Vigilance
When Royal Templar enters, target creature gets +2/+0 and gains vigilance and indestructible until end of turn.
Cybersoul {3}{W}

Target creature you control gets +2/+2 and gains indestructible until end of turn. If it was the target of another spell or ability this turn, create two 1/1 white Bird creature tokens with flying.