Destroy all creatures. They can't be regenerated.

Threshold — If there are seven or more cards in your graveyard, instead destroy all creatures, then create two 1/1 white Spirit creature tokens with flying. Creatures destroyed this way can't be regenerated.

Exile target creature card from your graveyard. Create X 1/1 white Bird creature tokens with flying, where X is the exiled card's toughness.

Return all creature cards from your graveyard to the battlefield. Each of them is a 1/1 Spirit with flying in addition to its other types. Exile Storm of Souls.

Flying

Delirium — Sacrifice another creature: This creature gets +2/+1 until end of turn. Activate only if there are four or more card types among cards in your graveyard.

When you cast this spell, copy it for each time you've cast your commander from the command zone this game.

Create a 4/4 white Angel creature token with flying.

Tap any number of untapped creatures you control. Create a 4/4 white Angel creature token with flying for each creature tapped this way.

Choose one or more —

• Exile all artifacts.

• Exile all creatures.

• Exile all enchantments.

• Exile all graveyards.

You gain 10 life. Then if you have more life than an opponent, create a 5/5 white Giant Warrior creature token.

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

Spell mastery — If there are two or more instant and/or sorcery cards in your graveyard, creatures you control gain indestructible until end of turn.

Create three 1/1 white Spirit creature tokens with flying.

Choose a word that's four letters or longer. For each nonland permanent you control and each nonland card in your graveyard with the chosen word in its rules text or type line, create a colorless 2/2 creature token with no name or creature types.

Separate all creature cards in your graveyard into two piles. Exile the pile of an opponent's choice and return the other to the battlefield.

Convoke (Your creatures can help cast this spell. Each creature you tap while casting this spell pays for or one mana of that creature's color.)

Create three 1/1 white Spirit creature tokens with flying.

Destroy all creatures. They can't be regenerated. For each creature destroyed this way, its controller creates a 1/1 white Spirit creature token with flying.

You may exile two white cards from your hand rather than pay this spell's mana cost.

Destroy all creatures.

Return any number of target creature cards with total power 10 or less from your graveyard to the battlefield. Exile Reunion of the House.

Domain — Create a 1/1 blue Bird creature token with flying for each basic land type among lands you control.

Create five 1/1 white Human creature tokens. If this spell was cast from a graveyard, create ten of those tokens instead.

Flashback (You may cast this card from your graveyard for its flashback cost. Then exile it.)