mtg.wtf

{1}{U}: Change Riptide Mangler's base power to target creature's power.

Whenever Riptide Pilferer deals combat damage to a player, that player discards a card.
Morph {U}

Flash
Defender

Return target creature card from a graveyard and target creature on the battlefield to their owners' hands.

Target noncreature artifact you control becomes a 0/0 artifact creature. Put four +1/+1 counters on each artifact that became a creature this way.
Overload {4}{U}{U}

When Rise of the Hobgoblins enters the battlefield, you may pay {X}. If you do, create X 1/1 red and white Goblin Soldier creature tokens.
{R/W}: Red creatures and white creatures you control gain first strike until end of turn.

Target creature gets +2/+0 and gains first strike until end of turn.

{2}, {T}: Shuffle target nontoken permanent you control into its owner's library.

As an additional cost to cast this spell, sacrifice a creature.
Rite of Consumption deals damage equal to the sacrificed creature's power to target player or planeswalker. You gain life equal to the damage dealt this way.

Whenever a creature or enchantment enters the battlefield under your control this turn, draw a card.
Flashback {2}{G}{W}

As an additional cost to cast this spell, sacrifice a nonland permanent.
Exile target nonland permanent.
Flashback {2}{W}{B}

Discard any number of cards. Counter target spell unless its controller pays {3} for each card discarded this way.

Discard any number of cards. Search your library for up to that many basic land cards, reveal them, put them into your hand, then shuffle.

Creatures you control get +1/+1 until end of turn.
Coven — If you control three or more creatures with different powers, creatures you control get +2/+1 until end of turn instead.

Islandwalk
{G}: Regenerate River Boa.

When River Herald Scout enters the battlefield, it explores.

Put a +1/+1 counter on target creature and a +1/+1 counter on up to one target Merfolk.

Flying
{3}{G}{U}: You gain 2 life and draw a card.

{U}: River Merfolk gains mountainwalk until end of turn.

River Sneak can't be blocked.
Whenever another Merfolk enters the battlefield under your control, River Sneak gets +1/+1 until end of turn.

Whenever you cast a spell that's both blue and red, Riverfall Mimic has base power and toughness 3/3 until end of turn and can't be blocked this turn.

Riveteers Decoy must be blocked if able.
Blitz {3}{G}

{1}{B/G}: Riveteers Initiate gains deathtouch until end of turn.

{B/G}: Riveteers Initiate gains deathtouch until end of turn.

Menace
When Riveteers Provocateur enters the battlefield, choose a creature card in your hand without blitz. It perpetually gains blitz. The blitz cost is equal to its mana cost.
Blitz {B}{R}