This spell costs {2} less to cast if an opponent lost life this turn.
Corrupt — When this creature enters, if you control a permanent with greater mana value, destroy up to one target artifact, creature, or planeswalker.

Damned — This spell costs {1} less to cast for each permanent you've sacrificed this turn.
Whenever you sacrifice a permanent, this creature deals 2 damage to target opponent unless they exile a permanent they control. You may play cards exiled this way for as long as they remain exiled, and you may spend mana of any type to cast them.

Flow — {2}{W}: This creature gains indestructible until end of turn. Activate only as a sorcery.

Flash
When Grasping Ancient enters, exile up to one target instant or sorcery spell.
Whenever Grasping Ancient attacks, you may cast the exiled card without paying its mana cost.
Spellcharge 4

Flash
When Hazakh Ambassador enters, target creature gains deathtouch until end of turn.
Basic landcycling {1}{B}

Ward—Sacrifice a permanent.
Whenever Host of the Neverending Revel enters or attacks, each player sacrifices a nonland, nontoken permanent. For each player who doesn't, you draw a card.

Trample
When Imperfect Fugisaur enters, you may sacrifice an artifact. If you do, it gains haste until end of turn.
Whenever Imperfect Fugisaur deals combat damage to a player, that player sacrifices an artifact. If they can't, you draw a card.

Flying
Whenever you cast a spell from exile, this creature deals damage equal to that spell's mana value to any target.

Whenever Implacable Shrine-Guard attacks, for each color, do the following if your devotion to that color is three or greater.
{W} — Create a 1/1 white Human creature token.
{U} — Draw a card.
{B} — Each opponent loses 2 life.
{R} — Create a Treasure token.
{G} — You gain 3 life.

Menace
Whenever Imposing Maw deals combat damage to a player, that player loses 3 life unless they discard a card.

Approval — When Inflammatory Declaimer enters, it deals X damage to each opponent, where X is the number of colors among permanents you control.

Menace
Corrupt — When this creature enters, if you control a permanent with greater mana value, it gets +2/+2 and gains haste until end of turn.

Indestructible
As long as your devotion to red and white is less than seven, Iroas isn't a creature.
Whenever you attack, you gain 1 life for each attacking creature. If you gained 5 or more life this way, draw a card.

Trample
Whenever Iron Steambreaker attacks, put a +1/+1 counter on it.

Flying
If a Dragon you control would deal damage to an opponent, it deals that much damage plus 1 instead.
{2}{U}{R}: Transform Iviana's Spellmaw.

Flying, trample
If a source you control would deal damage to an opponent or a permanent an opponent controls, you may have it deal twice that much damage instead if it's a Dragon or Iviana planeswalker. Otherwise, it deals that much damage plus 2 instead.

Indestructible
As long as your devotion to green and white is less than seven, Karametra isn't a creature.
Enchantments and enchanted permanents you control have “When this permanent becomes tapped for the first time during each of your turns, untap it.”

Flying
Whenever one or more creatures you control become tapped, tap up to one target creature an opponent controls.

Ninjutsu {2}{G}{U}
Whenever this creature deals combat damage to a player, you may search your library for a land card, put it onto the battlefield tapped, then shuffle. That land becomes a 4/4 Dragon creature in addition to its other types.

When Lady of the Mists enters, you may pay 2 life. If you do, it acclimates.
As long as you control a Weather, Lady of the Mists gets +0/+2.

Vigilance, ward {1}
Whenever Lavis attacks, sacrifice any number of artifacts and/or enchantments. Create that many colorless Forest Plains land tokens named Root Node.

Lifelink
Level up—{1}, Pay 4 life.
[level 1-4] Lifelink
Whenever you gain life, draw a card.
[level 5+] Lifelink
Whenever you gain life, draw that many cards.

Whenever this creature transforms into Lone Switchblade or another permanent you control transforms, each opponent loses 1 life and you gain 1 life.

When Magnetic Snuffler enters, return target Equipment card from your graveyard to the battlefield attached to Magnetic Snuffler.
Whenever you sacrifice an artifact, put a +1/+1 counter on Magnetic Snuffler.

{1}: Untap Magnetling.
{1}: Magnetling can't be blocked by creatures with power 2 or less this turn.
{1}: Choose a card type. Magnetling loses that type until end of turn.
{1}: Magnetling gets +1/-1 or -1/+1 until end of turn.