Savage Ventmaw

Mana cost: {4}{R}{G}
Type: Creature — Dragon
Power / toughness: 4 / 4
Set: Foundations #665 (uncommon)
Price: $0.53 USD

Flying
Whenever this creature attacks, add {R}{R}{R}{G}{G}{G}. Until end of turn, you don't lose this mana as steps and phases end.

Savage Ventmaw has 6 printings, first in Dragons of Tarkir (2015). EDHREC ranks it #1,704 among Commander cards. It appears most in The Ur-Dragon decks (17,348 on EDHREC). 3 public decks on TCG run it. It has 1 official ruling.

Legality

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

Public decks that run Savage Ventmaw

Draconic Destruction - Starter Commander Decks, led by Atarka, World Render
Draconic Domination - Commander 2017, led by The Ur-Dragon
Draconic Rage - Forgotten Realms Commander, led by Vrondiss, Rage of Ancients

Commanders that run Savage Ventmaw most

Deck counts from EDHREC.

The Ur-Dragon: 17,348 decks
Miirym, Sentinel Wyrm: 15,743 decks
Ureni of the Unwritten: 8,693 decks
Atarka, World Render: 5,307 decks
Tiamat: 3,605 decks
Anzrag, the Quake-Mole: 2,926 decks
Ruric Thar, the Unbowed: 2,020 decks
Klauth, Unrivaled Ancient: 1,762 decks

Often played with Savage Ventmaw

Cards that show up in the same decks on EDHREC.

Rulings

2015-02-25: This mana won't be lost as steps and phases end for the remainder of the turn even if Savage Ventmaw leaves the battlefield during the turn.