Put a deathtouch counter on target creature you control. Untap that creature. It gains hexproof, reach and indestructible until end of turn.

Enchant creature
Enchanted creature gets +3/+3 and has reach.

Reach
If a creature you control would deal combat damage to a permanent or player, you may have it deal damage equal to your devotion to green instead.

Archaic Obelisk enters with a charge counter on it.
{T}: Mill two cards, then you may remove a charge counter from Archaic Obelisk. If you do, return a card milled this way to your hand.

Menace
Spellcharge 3
You may cast Archaic Straggler from your graveyard if you've spent at least three mana to cast spells this turn.

Flying, vigilance, lifelink

Flying
Favored
Whenever your Champion attacks, create a 0/0 white Army creature token, then put a +1/+1 counter on each Army you control.

Menace
When Ardent Voter enters, make a pledge.

Menace
Creature tokens you control get +1/+1, have haste, and must attack each combat if able.
At the beginning of combat on your turn, create a 1/1 red Soldier creature token.

When Arduous Miners enters, you may have all players discard a card.
Whenever one or more cards leave your graveyard, create a tapped Treasure token.

Trample
Whenever Arena Champion attacks, create a Weapon token, then attach it to an attacking creature you control.

Haste
Arid Outrider gets +1/+0 as long as you control a token.

Distribute a trample counter, a vigilance counter, a reach counter, and a deathtouch counter among any number of creatures you control. Then draw a card for each creature you control with one or more counters on it.

Army Reserves enters with X +1/+1 counters and a defender counter on it.
{1}: Move a counter from Army Reserves onto another target creature. Activate only as a sorcery.

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

Flying
Whenever Arsenal Mentor attacks, teach target attacking creature with lesser power flying.

Target creature gets -3/-3 until end of turn. When that creature dies this turn, create a 1/1 colorless Cyborg artifact creature token.

Spells you cast from anywhere other than your hand can't be countered.
{1}{G/U}, {T}: Put a +1/+1 counter on target creature that doesn't have a +1/+1 counter on it. Activate only as a sorcery.

Search your library for a basic land card, reveal it, put it into your hand, then shuffle. If that card doesn't share a name with any lands you control, you gain 2 life.

Enchant creature
Enchanted creature loses all abilities and is a white Peasant with base power and toughness 1/1 named Penitent Prisoner.
When enchanted creature leaves the battlefield, you may draw a card.

Whenever Ascended Seer attacks, it gets +1/+0 until end of turn unless defending player pays {1}.

Flying, haste
Whenever you cast a spell that targets a creature you control, you may return Ashlands Phoenix from your graveyard to your hand.

As an additional cost to cast artifact spells, you may pay {2}. When you do, each opponent sacrifices an untapped creature.

When Askir's Rearguard enters, if a creature you control dealt combat damage to a player this turn, draw a card.
Wander {1}{U}

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