Keyword: Transform

Transform all Humans. Prevent all combat damage that would be dealt this turn by creatures other than Werewolves and Wolves. (Only double-faced cards can be transformed.)

When Path of Mettle enters the battlefield, it deals 1 damage to each creature that doesn’t have first strike, double strike, vigilance, or haste.
Whenever you attack with at least two creatures that have first strike, double strike, vigilance, and/or haste, transform Path of Mettle.

At the beginning of combat on your turn, put a +1/+1 counter on target creature you control. Then if that creature has three or more +1/+1 counters on it, transform Hadana’s Climb.

At the beginning of combat on your turn, put a +1/+1 counter on target creature you control. Then if that creature has three or more +1/+1 counters on it, transform Hadana’s Climb.

: Exile target creature. Then if there are three or more cards exiled with Profane Procession, transform it.

Whenever one or more creatures you control deal combat damage to a player, create a Treasure token. (It’s an artifact with “, Sacrifice this artifact: Add one mana of any color.”)
At the beginning of your end step, if you control five or more artifacts, transform Storm the Vault.

, : Draw a card, then exile a card from your hand. If cards with five or more different converted mana costs are exiled with Azor’s Gateway, you gain 5 life, untap Azor’s Gateway, and transform it.

: Exile target creature. Then if there are three or more cards exiled with Profane Procession, transform it.

, : Search your library for a basic land card, reveal it, put it into your hand, then shuffle your library.
At the beginning of your end step, if you control seven or more lands, transform Thaumatic Compass.

, Pay 2 life: Draw a card.
At the beginning of your upkeep, if you have 5 or less life, you may transform Arguel’s Blood Fast.

Instant and sorcery spells you cast cost less to cast.
Whenever you cast an instant or sorcery spell, put a charge counter on Primal Amulet. Then if there are four or more charge counters on it, you may remove those counters and transform it.

Flash
Flying, vigilance
When Archangel Avacyn enters the battlefield, creatures you control gain indestructible until end of turn.
When a non-Angel creature you control dies, transform Archangel Avacyn at the beginning of the next upkeep.

When Legion’s Landing enters the battlefield, create a 1/1 white Vampire creature token with lifelink.
When you attack with three or more creatures, transform Legion’s Landing.

, Pay 2 life: Draw a card.
At the beginning of your upkeep, if you have 5 or less life, you may transform Arguel’s Blood Fast.

At the beginning of your upkeep, exile the top card of your library. If it’s a nonland card, you may cast that card this turn.
Whenever you cast your third spell in a turn, you may transform Vance’s Blasting Cannons.

+1: Until end of turn, up to one target creature gets +2/+2 and gains vigilance and haste.
0: Create a 2/2 green Wolf creature token. Transform Arlinn Kord.

, : Scry 1. Put a landmark counter on Treasure Map. Then if there are three or more landmark counters on it, remove those counters, transform Treasure Map, and create three Treasure tokens. (They’re artifacts with “, Sacrifice this artifact: Add one mana of any color.”)