msem-instigator

Flying
At the beginning of your upkeep, if it isn't an extra turn, put a sage counter on Magistrate of Eras.
Remove five sage counters from Magistrate of Eras: Take an extra turn after this one.

Trample
When Magmatic Ravager enters, two target lands you control don't untap during your next untap step.

Trample
Other Beasts you control have trample.
Whenever Magnoceros attacks, create a 5/5 green Beast creature token that's tapped and attacking.

At the beginning of your upkeep, if five or more instant and/or sorcery cards are in your graveyard, return target instant or sorcery card at random from your graveyard to your hand.

Whenever an opponent discards a card, you may draw a card.

Flash
Defender
When Majestic Garrison enters, another target creature you control gains indestructible until end of turn.

This spell costs {X} less to cast, where X is the number of creatures you control.
Vigilance

Flash
Enspirit (As you cast this spell, you may exile a nonenchantment creature you control until this leaves the battlefield or fails to resolve. Reduce this spell's cost by the exiled card's mana value.)

When Marauding Goliath becomes blocked by a creature with power 1 or less, sacrifice it at end of combat.

Whenever Marine Delver attacks, draw a card.

{X}{U}{U}: Marine Monster can't be blocked by creatures with mana value X or less this turn.

When Marionette Phantom enters, choose one —
• Draw a card.
• Proliferate. (Choose any number of permanents and/or players with counters on them, then give each another counter of each kind already there.)

Flying

Flying
Whenever you tap a land for mana, add one mana of any type that land produced.
At the beginning of each end step, if you control no untapped lands, transform Martoob, Blessing of Water.

Indestructible
Marva of Endless Inspiration can't attack or block unless you've cast a spell with mana value 4 or greater this turn.
At the beginning of your end step, return a card at random from your graveyard to your hand. If it's a land card, return it to the battlefield instead.

Flying (This creature can't be blocked except by creatures with flying or reach.)
Whenever Master of Winds or another creature with flying you control enters, you may draw a card.

First strike
Mauling Mother gets +1/+1 for each other creature you control.

Creatures you control lose poisonous and can't have or gain poisonous.
Snakes you control deal damage to players in the form of poison counters.

Flying
Whenever you cast a spell, draw a card, then put a +1/+1 counter on Maven of Perspective.

Trample, hexproof
When Maw of a Thousand Worlds enters, distribute X +1/+1 counters among creatures you control, where X is the number of differently named lands you control.
When Maw of a Thousand Worlds dies, you may remove any number of counters from among permanents you control. For each counter removed this way, draw a card.

When you cast this spell from anywhere other than your hand, it deals 5 damage to any target.
Trample

Trample
Enchantment spells and Aurashaper spells you cast cost {1} less to cast.
Whenever another enchantment you control enters, draw a card.

Colossal 4—{5}{U}{U}{U} (You may cast this for its colossal cost to have it enter with four +1/+1 counters; or pay {5}{U}{U}{U} as a sorcery: Put four +1/+1 counters on it if it has none.)
Whenever Megalokraken enters or attacks, reveal the top X cards of your library, where X is Megalokraken's power. You may cast a noncreature spell with mana value X or less from among them without paying its mana cost. Put the rest on the bottom of your library in a random order.

Other Elementals you control get +2/+2.
Whenever one or more Elementals you control attack, tap up to one target creature you don't control.

Crew 3 (Tap any number of creatures you control with total power 3 or greater: This Vehicle becomes an artifact creature until end of turn.)