Callaphe can't be blocked by creatures with mana value 4 or greater.
Whenever Callaphe the Mariner deals combat damage to a player, you get an experience counter. Then if you have three or more experience counters, bless target player.

When Caller of Ferocity enters, bless target creature.

Whenever you attack, you may cast an Aura card from your graveyard if that spell targets an attacking creature.

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

{4}{W}, Exile Charging Brightmare from your graveyard: Bless target creature. Activate only as a sorcery.

Flying
When Charming Siren leaves the battlefield, if it wasn't blocking, you may bless target creature.

First strike
When Chosen of Heliod enters, bless target creature.
{4}{W}{W}: Bless target creature you control. Activate only as a sorcery.

You may cast this spell without paying its mana cost if your devotion to black is four or greater.
Deathtouch
Whenever Chrolcatos deals combat damage to player, you draw a card and you lose 1 life.

When Chromatic Hart enters, you may exile target card from a graveyard.
{T}: Add one mana of any color.

Creatures you control have ward {2}.
[+1]: Scry 2. You may put a loyalty counter on another planeswalker you control.
[–1]: Create a 0/0 white Army creature token, then put a +1/+1 counter on each Army you control.
[–6]: Exile target nonland permanent.

Whenever Claes, Shield of Karda attacks, another target attacking creature you control gains indestructible until end of turn.
Whenever a planeswalker you control enters, you may exile Claes, then return him to the battlefield transformed with a number of loyalty counters on him equal to the starting loyalty of that planeswalker.

This spell costs {2} less to cast if the creature you control it targets has power 4 or greater.
Put a +1/+1 counter on target creature you control. It deals damage to another target creature equal to its power.

This spell costs {X} less to cast, where X is your greatest devotion to a single color.
Menace

Create a 0/0 white Army creature token if your devotion to white is three or more.
Put a +1/+1 counter on each creature you control.

Enchant creature
Enchanted creature can't attack or block, and its activated abilities can't be activated unless they're mana abilities.
Enchanted creature has “At the beginning of your upkeep, you lose 1 life.”

Enchant creature
Whenever enchanted creature deals combat damage to a player or planeswalker, you may sacrifice it. If you do, untap all creatures you control and after this phase, there is an additional combat phase.

{2}, Sacrifice another creature: Put a +1/+1 counter on Coward-Eater. Draw a card.

Deathtouch
Ward—Pay 4 life.
Whenever Cybele of the Frozen Faith deals combat damage to a player, you may skip your next turn. If you do, at the beginning of your next turn's upkeep, each opponent discards their hand, you draw seven cards, then put seven +1/+1 counters on Cybele.

Hexproof
When Dakran Shipcrusher enters, you may bless target creature.

Flying
When Daybreak Rider enters, you may bless another target creature.

You may cast this spell as though it had flash by sacrificing a creature in addition to its other costs. If you do, when it enters, attach it to target creature you control.
Equipped creature gets +2/+0 and has “Whenever this creature deals combat damage to a player, that player discards a card.”
Equip—Pay 2 life.

Enchanted creatures you control get +2/+2 until end of turn. Other creatures you control get +2/+0 until end of turn.

Enchant creature
Enchanted creature gets -4/-0 and loses flying.

Whenever Disciple of the Weavers attacks, if you control another creature with power 4 or greater, Disciple of the Weavers can't be blocked by creatures with power 2 or less.
Whenever Disciple of the Weavers deals combat damage to a player, put a +1/+1 counter on it.

Counter target spell.
Draw a card if you control a legendary permanent.