Offspring
When this creature enters, target creature you control gets +1/+1 until end of turn.

When this creature enters, target creature you control gets +1/+1 until end of turn.
(This token's mana cost is .)

Vigilance
When this creature enters, tap up to two target creatures your opponents control.

(As a Siege enters, choose an opponent to protect it. You and others can attack it. When it's defeated, exile it, then cast it transformed.)
When this Siege enters, create a 2/2 white and blue Knight creature token with vigilance.

(As a Siege enters, choose an opponent to protect it. You and others can attack it. When it's defeated, exile it, then cast it transformed.)
When this Siege enters, you gain 4 life and draw a card.

(As a Siege enters, choose an opponent to protect it. You and others can attack it. When it's defeated, exile it, then cast it transformed.)
When this Siege enters, look at target opponent's hand. You may exile a nonland card from it. For as long as that card remains exiled, its owner may play it. A spell cast this way costs more to cast.

(As a Siege enters, choose an opponent to protect it. You and others can attack it. When it's defeated, exile it, then cast it transformed.)
When this Siege enters, search your library for an Aura, God, or Demigod card, reveal it, put it into your hand, then shuffle.

Flash
When this creature enters, create a 1/1 white Ally creature token.

At the beginning of your end step, if you haven't cast a spell from your hand this turn and this creature doesn't have a flying counter on it, put a flying counter on it.

Count the number of cards in your library. Your life total becomes that number.

Enchant creature
Prevent all damage that would be dealt to enchanted creature.

Up to four target permanents you control gain indestructible until end of turn.
Rebound

At the beginning of combat on your turn, if you've cast a noncreature spell this turn, create a 0/3 colorless Wall creature token with defender and reach.
Whenever you attack, you may pay . When you do, target creature gets +1/+0 until end of turn for each creature you control and can't be blocked this turn.

Lifelink
Whenever you put one or more +1/+1 counters on one or more other Heroes you control, you may create a 0/4 colorless Wall creature token with defender.

Return target permanent card from your graveyard to the battlefield, then distribute four +1/+1 counters among any number of creatures and/or Vehicles target player controls.

Destroy target artifact or enchantment. You gain 4 life.

Buyback
The next time a source of your choice would deal damage to you this turn, prevent that damage.

Flying
As Iona enters, choose a color.
Your opponents can't cast spells of the chosen color.

Enchant creature
Enchanted creature gets +2/+2, has vigilance, and can block an additional creature each combat.

Exile target creature or enchantment.

Double strike
When this creature enters, create a colorless Equipment artifact token named Axe with "Equipped creature gets +1/+0" and equip .

Iron Verdict deals 5 damage to target tapped creature.
Foretell

Target creature gets +0/+4 until end of turn.
Cycling

When this creature enters, you may return target Aura or Equipment card from your graveyard to your hand.

This creature can block any number of creatures.
Morph

When this creature enters, put a +1/+1 counter on target creature.

Whenever this creature or a commander you control attacks alone, return target artifact card from your graveyard to the battlefield.

Lieutenant — At the beginning of combat on your turn, if you control your commander, target nonlegendary creature you control gains myriad until end of turn.