mtg.wtf

Flying
When Shrieking Grotesque enters the battlefield, if {B} was spent to cast it, target player discards a card.

Fear
When Shriekmaw enters the battlefield, destroy target nonartifact, nonblack creature.
Evoke {1}{B}

At the beginning of your upkeep or whenever you cast a green spell, put a charge counter on Shrine of Boundless Growth.
{T}, Sacrifice Shrine of Boundless Growth: Add {C} for each charge counter on Shrine of Boundless Growth.

At the beginning of your upkeep or whenever you cast a red spell, put a charge counter on Shrine of Burning Rage.
{3}, {T}, Sacrifice Shrine of Burning Rage: It deals damage equal to the number of charge counters on it to any target.

At the beginning of your upkeep or whenever you cast a black spell, put a charge counter on Shrine of Limitless Power.
{4}, {T}, Sacrifice Shrine of Limitless Power: Target player discards a card for each charge counter on Shrine of Limitless Power.

At the beginning of your upkeep or whenever you cast a white spell, put a charge counter on Shrine of Loyal Legions.
{3}, {T}, Sacrifice Shrine of Loyal Legions: Create a 1/1 colorless Phyrexian Myr artifact creature token for each charge counter on Shrine of Loyal Legions.

At the beginning of your upkeep or whenever you cast a blue spell, put a charge counter on Shrine of Piercing Vision.
{T}, Sacrifice Shrine of Piercing Vision: Look at the top X cards of your library, where X is the number of charge counters on Shrine of Piercing Vision. Put one of those cards into your hand and the rest on the bottom of your library in any order.

Prowess
Whenever you cast a noncreature spell, you may pay {R/W}{R/W}. If you do, target creature gains double strike until end of turn.

Flying
Whenever Siani, Eye of the Storm attacks, scry X, where X is the number of attacking creatures with flying.
Partner

When Sibsig Host enters the battlefield, each player mills three cards.

When Sibsig Icebreakers enters the battlefield, each player discards a card.

Delve
When Sibsig Muckdraggers enters the battlefield, return target creature card from your graveyard to your hand.

Living weapon
Equipped creature gets +2/+2.
Equip {4}

Exploit
When Sidisi's Faithful exploits a creature, return target creature to its owner's hand.

Lifelink
Morph {1}{B}

Whenever Sidisi, Brood Tyrant enters the battlefield or attacks, mill three cards.
Whenever one or more creature cards are put into your graveyard from your library, create a 2/2 black Zombie creature token.

Deathtouch
Exploit
When Sidisi, Undead Vizier exploits a creature, you may search your library for a card, put it into your hand, then shuffle.

Flying
When Siege Dragon enters the battlefield, destroy all Walls your opponents control.
Whenever Siege Dragon attacks, if defending player controls no Walls, it deals 2 damage to each creature without flying that player controls.

Trample
When Siege Rhino enters the battlefield, each opponent loses 3 life and you gain 3 life.

Convoke
Trample

Replicate {1}{R}
Target Mountain becomes a 3/1 creature. It's still a land.

Draw three cards, then discard a card.

Look at the top two cards of your library. Put one of them into your hand and the other on the bottom of your library.
Rebound

Whenever equipped creature attacks alone, it gets +1/+1 until end of turn for each other creature you control.
Equip {1}

Battle cry
Signal Pest can't be blocked except by creatures with flying or reach.