Whenever Magnetic Rhetorician attacks, make a pledge.

Flying
{5}: Draw a card. Activate only if your devotion to blue is three or greater.

Trample
Mercurial Wright gets +1/+0 for each other artifact you control.
{2}: Target permanent becomes an artifact in addition to its other types until end of turn.

When Minister of Utility enters, make a pledge.
{2}, Sacrifice a Clique: Make a pledge.

Trample
Whenever Mondo attacks, create a 1/1 colorless Soldier creature token that's tapped and attacking, then Mondo gets +X/+0 until end of turn, where X is the number of attacking creatures.

Landfall — Whenever a land you control enters, you gain 2 life. Then if you control a Mountain and a Plains, each opponent loses 2 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.

Trample
Whenever you attack, up to one target attacking creature gets +2/+0 and gains trample until end of turn.

Mykian, Pop Paragon enters with a +1/+1 counter on it for each color of mana spent to cast it.
Remove two counters from Mykian: Draw two cards.

Flying
Creatures you control but don't own get +1/+1 and have flying.
Whenever a creature you control deals combat damage to a player, you may return it to its owner's hand.

Creatures you control with counters on them have all activated abilities of other creatures you control with counters on them.
{1}, {T}: Teach target creature vigilance.

Whenever another creature you control enters, you gain 2 life.

Flash
Lifelink
When Nikon, Skophos Protector enters, the next time a source of your choice would deal damage to you or a permanent you control this turn, prevent that damage. If damage is prevented this way, Nikon deals that much damage to that source's controller.

Flying
Amity — Whenever you attack with Nimbus Dragon and exactly one other creature, tap target creature defending player controls.

Whenever you gain life, put a +1/+1 counter on Nourishing Orator.
{2}{G}{W}: Nourishing Orator gains lifelink until end of turn.

Nykthos, Architect of Gods has indestructible as long as you control at least three Shrines.
Whenever Nykthos attacks, you may pay {W}{U}{B}{R}{G}. If you do, search your library for a Shrine or legendary land card, put it onto the battlefield, then shuffle.

Whenever an enchantment you control enters, tap target noncreature permanent.

During your turn, you may play cards from your graveyard but not from anywhere else.
Whenever you cast an instant or sorcery spell, exile that card instead of putting it into your graveyard as it resolves.
If another permanent you control would be put into your graveyard, exile it instead.

First strike
Landfall — Whenever a land you control enters, other creatures you control get +1/+1 until end of turn.
{2}{R}{W}{B}: Transform Omenhorn.

Whenever Omnoid Destroyer or another artifact you control enters, artifact creatures you control gain deathtouch until end of turn.

Flying, haste
As an additional cost to cast spells with flashback, you may pay {1}{R}. When you do, return Opal-Eye Phoenix from your graveyard to the battlefield.

When Opulent Roughrider enters or leaves the battlefield, surveil 1, then you may reveal the top card of your library. If that card has the same name as a permanent you control or a card in your graveyard, put it into your hand.
Wander {4}{U}{U}

Vigilance
Whenever you attack, bless target creature.

Whenever you cast an instant or sorcery spell, Orbinoid gets +1/+1 and gains trample until end of turn.

Trample
Solidarity
{G}, Sacrifice an enchantment: Ozanwood Huntsman gets +2/+2 until end of turn.