Matter Harvester has protection from mana values less than the number of artifacts you control.
Whenever a nonland permanent you don't control leaves the battlefield, create a 1/1 colorless Cyborg artifact creature token.

This land enters tapped unless you control one or fewer other lands.
{T}: Add {R} or {G}.
Cycling {2}

When Mellan, Defense Attorney enters, make a pledge.
{T}: Choose a color from among other permanents you control. Another target creature you control gains hexproof from that color until end of turn. It can't be blocked by creatures of that color this turn.

Whenever this creature deals combat damage to a player, create an X/X colorless Construct artifact creature token, where X is 1 plus the number of counters on this creature.
{1}, Sacrifice an artifact or enchantment: Put a +1/+1 counter on this creature. It gains trample until end of turn.

When Menelaia enters, put a +1/+1 counter on up to two target creatures.
{1}, Remove a +1/+1 counter from another creature you control: That creature gain indestructible until end of turn. Tap it.

Mev can't be blocked by creatures with greater power.
Whenever Mev attacks, draw a card.
Whenever Mev deals damage to a player, that player draws a card.

Miasmic Cove enters tapped.
{T}: Add {B} or {G}.
{4}{B/G}: Miasmic Cove becomes a 2/3 black and green Snake creature with deathtouch until end of turn. It's still a land. This ability costs {X} less to activate, where X is your devotion to black and green. Activate only once each turn.

{R}, {T}: Copy target activated ability you control. You may choose new targets for the copy.

{T}: Add {C}.
{T}: Surveil 1. Return Mirage Island to its owner's hand.

As this land enters, you may pay 2 life. If you don't, it enters tapped.
{T}: Add {U} or {R}.

Choose one. If your devotion to black is three or greater, you may choose another. The same is true for devotion to red.
• Create two tapped Treasure tokens.
• Creatures you control get +2/+0 until end of turn.
• Choose a nonland permanent type. Each opponent sacrifices a permanent of that type.

Flying
Whenever Molten Slagmaw enters or attacks, each opponent sacrifices an artifact or nonbasic land.

Create X 1/1 white Monkey creature tokens.

Monument to Might's power and toughness are each equal to the number of lands you control.
You may look at the top card of your library any time, and you may play lands from the top of your library.
Spellcharge 5

When this creature enters, you may pay X life. When you do, return X target cards you discarded this turn from your graveyard to your hand.
Whenever you discard a card, each opponent loses 1 life.

Ward {1}
Whenever Morbid Bloomer deals combat damage, you may pay {1}. When you do, return up to one other target permanent card from your graveyard to your hand.

This land enters tapped unless you control one or fewer other lands.
{T}: Add {U} or {B}.
Cycling {2}

When Mystery Egg enters, search your library for a card and exile it face down, then shuffle your library. You may look at that card as long as it remains exiled.
{G}, {T}, Sacrifice Mystery Egg: Turn the exiled card face up. You may cast that card this turn if it's a creature spell, and you may cast that spell as though it had flash.

Level up {W/B}
[level 2-6] During each of your turns, you may play a land card from your graveyard.
[level 7+] During each of your turns, you may play a land and cast a permanent spell from your graveyard.

Exalted
{2}{W}: Target attacking creature gains double strike until end of turn.
{2}{B}: Target attacking creature gains indestructible until end of turn.

Flash
When Narzi, Hero of the Mokar enters, up to one other target creature gets +1/+1 and gains indestructible until end of turn. If she wandered, other creatures you control get +1/+1 and gain indestructible until end of turn instead.
Wander {4}{W}{W}

Ninjutsu {3}{U}{U}
Flying
Whenever this creature deals combat damage to a player, create a token that's a copy of target attacking creature you control that entered this turn.

Flying
Whenever you gain control of a permanent you don't own or a permanent you don't own enters under your control, create a token that's a copy of it. Sacrifice the token at beginning of your next turn's end step.

Favored
Whenever your Champion attacks, creatures you control with power 4 or greater get +1/+1 and gain trample until end of turn.

Nessian Woods enters tapped.
{T}: Add {R} or {G}.
{6}{R/G}: Nessian Woods becomes a 5/4 red and green Dryad creature with trample until end of turn. It's still a land. This ability costs {X} less to activate, where X is your devotion to red and green. Activate only once each turn.