Other creatures you control get +1/+1 and have vigilance.
Spellcharge 5

When Renowned Roughrider enters or leaves the battlefield, create a 1/1 white Human creature token. Then if you control four or more creatures, put a +1/+1 counter on a creature you control.
Wander {4}{W}{W}

When Retrofit Paladin enters, tap up to two target creatures with power 3 or less.

Exile target artifact or enchantment.

Once each turn, when a creature with power 2 or less enters the battlefield under your control, you may pay {1}. If you do, draw a card.
{1}{W}: Level 2
At the beginning of combat on your turn, put a +1/+1 counter on up to one target creature you control.
{3}{W}: Level 3
When this Class becomes level 3, exile target nonland permanent an opponent controls until this Class leaves the battlefield.

{2}, Sacrifice a land: Create two 1/1 red Soldier creature tokens.
Revolt — Whenever Revolutionary Recruiter attacks, if a permanent you controlled left the battlefield this turn, other creatures you control get +1/+0 until end of turn.

Choose one —
• Exile target artifact or enchantment.
• Exile target creature you control, then return it to the battlefield under its owner's control. If that creature entering the battlefield causes any abilities to trigger, those abilities trigger an additional time.

This spell costs {X} less to cast, where X is the amount of life you have more than your starting life total
Lifelink
When Rose Garden Guardian enters the battlefield, put a +1/+1 counter on each other creature you control with lifelink.

Vigilance
When Royal Templar enters, target creature gets +2/+0 and gains vigilance and indestructible until end of turn.
Cybersoul {3}{W}

Target creature you control gets +2/+2 and gains indestructible until end of turn. If it was the target of another spell or ability this turn, create two 1/1 white Bird creature tokens with flying.

Choose one —
• Destroy target artifact.
• Destroy target enchantment.
• Exile target card from a graveyard.

Flying
Creatures you control with base power 1 or less get +1/+0.

Flash
When Seal Away enters the battlefield, exile target tapped creature an opponent controls until Seal Away leaves the battlefield.

Exile all creatures you don't control. Then return those cards to the battlefield tapped under their owners' control unless you've cast another spell named Second Crown's Fall this game. Then exile Second Crown's Fall.

Flying, vigilance
{1}, Discard a card: Sharlate gains indestructible until end of turn.
Each spell an opponent casts costs {VP} more to cast for each other spell that player has cast this turn.

Destroy target nonland permanent if it's a creature with power 4 or greater or if you've amped it up this turn.

At the beginning of your upkeep, create a 1/1 white Human creature token for each Shrine you control.

Target creature you control gets +1/+1 until end of turn. Put a double strike counter on that creature.

Exile target nonland permanent with mana value less than or equal to the amount of life you've lost this turn.

Double strike

When Skophos Warden enters the battlefield, you may exile target artifact or enchantment an opponent controls until Skophos Warden leaves the battlefield.

Create two 1/1 colorless Servo artifact creature tokens. Scry 1.

Flying
Nonland permanents you control have phasing.
Whenever Spacetime Seraph phases out, until your next turn, your life total can't change and you have protection from everything.

Sparring Partner has first strike as long as it's attacking.
When Sparring Partner dies, create a 1/1 red Soldier creature token.

Whenever Spear of the Sun-Crowned attacks, if you control two or more enchanted creatures, it gains lifelink until end of turn.