Whispersteel Dagger

Mana cost: {2}{B}
Type: Artifact — Equipment
Set: The List #ZNC-5 (rare)
Price: $0.32 USD

Equipped creature gets +2/+0.
Whenever equipped creature deals combat damage to a player, you may cast a creature spell from that player's graveyard this turn, and you may spend mana as though it were mana of any color to cast that spell.
Equip {3}

Whispersteel Dagger has 2 printings, first in Zendikar Rising Commander (2020). EDHREC ranks it #16,340 among Commander cards. It appears most in Anowon, the Ruin Thief decks (1,684 on EDHREC). 1 public deck on TCG runs it. It has 4 official rulings.

Legality

commander: legal
legacy: legal
vintage: legal
pauper: not legal
modern: not legal
pioneer: not legal
standard: not legal
brawl: not legal

Public decks that run Whispersteel Dagger

Sneak Attack - Zendikar Rising Commander, led by Anowon, the Ruin Thief

Commanders that run Whispersteel Dagger most

Deck counts from EDHREC.

Often played with Whispersteel Dagger

Cards that show up in the same decks on EDHREC.

Rulings

2020-09-25: You don’t choose a card to cast as Whispersteel Dagger’s ability resolves. You simply get a permission to cast one later.
2020-09-25: You’ll still pay all costs for a spell cast this way, including additional costs. You may also pay alternative costs if any are available.
2020-09-25: In a multiplayer game, if a player leaves the game, all cards that player owns leave as well. If you leave the game, any spells and/or permanents you control from Whispersteel Dagger’s ability are exiled.
2020-09-25: You must follow the normal timing permissions and restrictions for the spell you wish to cast.