mtg.wtf

As an additional cost to cast this spell, tap an untapped creature you control.
Exile target tapped creature. Put a +1/+1 counter on the creature tapped to pay this spell's additional cost.

Improvise
Hexproof

Trample
Whenever this creature enters or attacks, you get {E} for each creature you control.
Pay {E}: This creature gets +1/+1 until end of turn.

Draw three cards, then discard a card.

Menace
When this creature enters, you may destroy target non-Elf creature whose power and toughness aren't equal.

Draw a card. Scry 2.

Corrosive Gale deals X damage to each creature with flying.

Enchant creature
Enchanted creature has trample and haste.

Whenever one or more other nontoken permanents with a name originally printed in the Arabian Nights expansion are on the battlefield, their controllers sacrifice them.
Players can't cast spells or play lands with a name originally printed in the Arabian Nights expansion.

When this creature enters, you may search your library for an artifact card, put it into your graveyard, then shuffle.
{R}, {T}, Sacrifice an artifact: Return target artifact card with mana value 3 or less from your graveyard to the battlefield.

{1}{U}, {T}: Target creature doesn't untap during its controller's next untap step.
{2}{B}, {T}: Surveil 2.

Menace, reach
This creature enters with a +1/+1 counter on it if an opponent lost life this turn.

Flying

{T}, Sacrifice this creature: Exile target black creature.

Enchant creature
When enchanted creature dies, draw three cards, then discard one of them.

{2}, {T}, Sacrifice this artifact: Add {U}{B}. Draw a card.

Sliver creatures you control have "When this creature enters, you may exile target creature an opponent controls until this creature leaves the battlefield."

Anything that could have changed The Game-Changing Host on the turn it enters applies retroactively. (He's been here the whole time.)
{T}: Create a copy of a game changer at random. You may play the copy without paying its mana cost. (There are currently 61. Perhaps look at a list and randomize?)

Choose one —
• Return target permanent card from your graveyard to your hand.
• Put your commander into your hand from the command zone.
Entwine {2}

{G}: Phelddagrif gains trample until end of turn. Target opponent creates a 1/1 green Hippo creature token.
{W}: Phelddagrif gains flying until end of turn. Target opponent gains 2 life.
{U}: Return Phelddagrif to its owner's hand. Target opponent may draw a card.

Light Up the Night deals X damage to any target. It deals X plus 1 damage instead if that target is a creature or planeswalker.
Flashback—{3}{R}, Remove X loyalty counters from among planeswalkers you control. If you cast this spell this way, X can't be 0.

{T}: This artifact deals 1 damage to target player or planeswalker. It deals 3 damage instead if you control artifacts named Crown of Empires and Throne of Empires.

First strike
Whenever you cast an instant or sorcery spell, Urabrask deals 1 damage to target opponent. Add {R}.
{R}: Exile Urabrask, then return it to the battlefield transformed under its owner's control. Activate only as a sorcery and only if you've cast three or more instant and/or sorcery spells this turn.

Menace
Whenever another creature you control dies, put a +1/+1 counter on this creature.
When this creature dies, each opponent gets a number of rad counters equal to its power.

Discard a card: This creature gains first strike until end of turn.