Hero card

Due Diligence

Enchantment – Aura

Value on arrivalDoes its thing as it enters: worth it from the first moment

Needs: Valiant

Gives: Aura, Enchantment

Not in winning lists yet: read from the card text and the graph

Build a deck with Due Diligence as the hero

Makes it work

Whiskervale Forerunner · Nettle Guard · Seedglaive Mentor

Benefits from it

Ethereal Armor · Optimistic Scavenger · Costume Closet · Gremlin Tamer · Rimefur Reindeer · Knight of Doves · Savior of the Sleeping · Slumbering Keepguard

Use instead if you don't have it

Might of the Ancestors · Team Avatar · Way of the Mentor · With Great Power . . . · Chosen by Valgavoth · Pain for All

Cards in the meta that answer it

Countersculpt (Azorius Control) · Get Lost (Azorius Control) · Inevitable Defeat (4-Color Control) · No More Lies (Azorius Control)