Vigilance (Attacking doesn't cause this creature to tap.) When Gallant Cavalry enters the battlefield, create a 2/2 white Knight creature token with vigilance.

Vigilance When Goliath Paladin enters the battlefield, you take the initiative.

Vigilance When Knight of the New Coalition enters the battlefield, create a 2/2 white and blue Knight creature token with vigilance.

Whenever an enchantment enters the battlefield under your control, scry 1. {2}{W}: Slumbering Keepguard gets +1/+1 until end of turn for each enchantment you control.

When Hopeful Vigil enters the battlefield, create a 2/2 white Knight creature token with vigilance. When Hopeful Vigil is put into a graveyard from the battlefield, scry 2. {2}{W}: Sacrifice Hopeful Vigil.

Flash (You may cast this spell any time you could cast an instant.) First strike (This creature deals combat damage before creatures without first strike.)

Flying, lifelink Whenever Breathless Knight or another creature enters the battlefield under your control, if that creature entered from a graveyard or you cast it from a graveyard, put a +1/+1 counter on Breathless Knight.

Create two 2/2 white Knight creature tokens with vigilance.

Changeling (This card is every creature type.) Changeling Outcast can't block and can't be blocked.

Flash Protection from red

When Inspiring Captain enters the battlefield, creatures you control get +1/+1 until end of turn.

Changeling (This card is every creature type.) When Irregular Cohort enters the battlefield, create a 2/2 colorless Shapeshifter creature token with changeling.

Flying When Kemba's Skyguard enters the battlefield, you gain 2 life.

Suspend 5—{W} (Rather than cast this card from your hand, you may pay {W} and exile it with five time counters on it. At the beginning of your upkeep, remove a time counter. When the last is removed, you may cast it without paying its mana cost. It has haste.) When Knight of Old Benalia enters the battlefield, other creatures you control get +1/+1 until end of turn.

Flying When Mesa Cavalier enters the battlefield, you gain 2 life.

When an opponent casts a creature spell, if Opal Champion is an enchantment, Opal Champion becomes a 3/3 Knight creature with first strike.

Roll a d20. 1—9 | Create two 1/1 white Soldier creature tokens. 10—19 | Create two 2/2 white Knight creature tokens. 20 | Create three 2/2 white Knight creature tokens.

Vigilance Whenever an enchantment you control is put into a graveyard from the battlefield, put a +1/+1 counter on Savior of the Sleeping.

Backup 1 (When this creature enters the battlefield, put a +1/+1 counter on target creature. If that's another creature, it gains the following ability until end of turn.) Vigilance

Changeling (This card is every creature type.) {1}{B}: Regenerate Skeletal Changeling.

Lifelink

Flying War Falcon can't attack unless you control a Knight or a Soldier.