Flying, vigilance, deathtouch
Whenever Abandoner of Flesh or another transformed permanent you control dies, return that card to the battlefield.

Flying, vigilance
Other creatures you control are Armies in addition to their other types.
At the beginning of your end step, create a 0/0 white Army creature token, then put a +1/+1 counter on each Army you control.

Favored
Whenever your Champion deals combat damage to a player, create that many Treasure tokens.

Whenever a creature dies, you draw a card and you lose 1 life.
At the beginning of your end step, put a decay counter on Arcet. It deals X damage to each player, planeswalker, and other creature, where X is the number of decay counters on it.
Escape—{4}{B}{B}{B}, Exile the top thirteen cards of your library.

Flying, vigilance
Whenever Arisen Hero attacks, if you control three or more Spirits, you gain 3 life and draw a card.

Menace
When Arrogant Cabalist enters the battlefield, if you control another Noble, each opponent loses 3 life and you gain 3 life.

Menace
Whenever you cast an artifact spell, each opponent loses 2 life.

Menace
When Askir enters the battlefield, each opponent loses life equal to the amount of life they've lost this turn.
Wander—{1}{B}{B}, Pay 4 life.

Flying

Vigilance, lifelink
Ward—{2}, Pay 2 life.
Azantium, Perfect Creation has all activated abilities and triggered abilities of other artifacts you control.

When Bangtan Security enters the battlefield, target creature gets +2/+0 and gains indestructible until end of turn.

When Beastbond Instructor enters the battlefield, put a trample counter on target creature you control.

Whenever an attacking creature you control dies, Bleeding Edge Memorial deals 1 damage to defending player.
Spellcharge 4

Ward {X}, where X is the number of differently named lands you control.

Trample, haste
Revolt — At the beginning of your end step, sacrifice Bloodfrenzied Vanguard unless another permanent you controlled left the battlefield this turn.

Flying, trample
When Blooming Cocollona enters the battlefield, you may have it deal 3 damage to another target creature or planeswalker. If you do, that permanent's controller may search their library for a basic land card, put that card onto the battlefield tapped, then shuffle.

Vigilance
Whenever Builder of Monuments enters the battlefield or attacks, put a build counter on it.
{T}, Remove X build counters from Builder of Monuments: Search your library for an artifact or enchantment card with mana value X or less, put it onto the battlefield, then shuffle.

When Bulvem Wardcleanser enters the battlefield, you may destroy target artifact or enchantment.

Trample
Whenever Carlacio, Riot Instigator attacks, you may have another target attacking creature you control dare X, where X is Carlacio's power.

Trample
When Centaur Mentor enters the battlefield, target creature gets +X/+0 until end of turn, where X is your devotion to green.

Vigilance
Whenever Cerys attacks, you may return a nontoken permanent you control to its owner's hand. If you do, create two 1/1 red Soldier creature tokens that are tapped and attacking.

Deathtouch
Whenever a creature you control with deathtouch deals damage to a planeswalker, destroy that planeswalker.
{2}{G}, Exile Contagion Brewer from your graveyard: Return target creature card with deathtouch from your graveyard to your hand.

When Cosmic Colossus enters, if you cast it from your hand, cast a copy of target card in exile without paying its mana cost unless an opponent exiles two nonland permanents they control.

Trample
Whenever one or more creatures you control with trample deal combat damage to a player or planeswalker, put a +1/+1 counter on target creature you control.

Vigilance
Whenever this creature transforms into Crown Betrayer or another permanent you control transforms, Crown Betrayer gets +2/+0 and gains indestructible until end of turn.