Overrun

Mana cost: {2}{G}{G}{G}
Type: Sorcery
Set: Commander 2014 #207 (uncommon)
Price: $0.26 USD

Creatures you control get +3/+3 and gain trample until end of turn. (Each of those creatures can deal excess combat damage to the player or planeswalker it's attacking.)

Overrun has 23 printings, first in Tempest (1997). EDHREC ranks it #1,718 among Commander cards. It appears most in Shroofus Sproutsire decks (4,914 on EDHREC). 4 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 Overrun

Guided by Nature - Commander 2014, led by Freyalise, Llanowar's Fury
Guided by Nature - Commander Anthology, led by Freyalise, Llanowar's Fury
Swell the Host - Commander 2015, led by Ezuri, Claw of Progress
Token Triumph - Starter Commander Decks, led by Emmara, Soul of the Accord

Commanders that run Overrun most

Deck counts from EDHREC.

Shroofus Sproutsire: 4,914 decks
Lathril, Blade of the Elves: 3,629 decks
Fynn, the Fangbearer: 2,859 decks
Emmara, Soul of the Accord: 2,467 decks
Rin and Seri, Inseparable: 2,318 decks
Chatterfang, Squirrel General: 2,210 decks
The Unbeatable Squirrel Girl: 1,784 decks
Xyris, the Writhing Storm: 1,777 decks

Often played with Overrun

Cards that show up in the same decks on EDHREC.

Rulings

2009-10-01: Overrun affects only creatures you control at the time it resolves. It won't affect creatures that come under your control later in the turn.