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Legality
| Format | Legality |
| 1v1 Commander | Legal |
| Archenemy | Legal |
| Canadian Highlander | Legal |
| Casual | Legal |
| Commander / EDH | Legal |
| Commander: Rule 0 | Legal |
| Custom | Legal |
| Duel Commander | Legal |
| Highlander | Legal |
| Legacy | Legal |
| Leviathan | Legal |
| Limited | Legal |
| Oathbreaker | Legal |
| Planar Constructed | Legal |
| Planechase | Legal |
| Quest Magic | Legal |
| Tiny Leaders | Legal |
| Vanguard | Legal |
| Vintage | Legal |
The Great Aerie
Plane — Tarkir
When you planeswalk to The Great Aerie and at the beginning of your upkeep, bolster 3. (Choose a creature with the least toughness among creatures you control and put three +1/+1 counters on it.)
Whenever chaos ensues, choose up to one target creature you control and up to one target creature an opponent controls. Each of those creatures deals damage equal to its toughness to the other.
PLN
1
/ 0
![Call For Backup [precon] thumbnail](http://static.tappedout.net/chart/35-0-0-20-45-small.png)
EDH
1
/ 1
![Bright-Palm, Soul Awakener feature for Call For Backup [precon]](http://static.tappedout.net/mtg-cards-2/march-of-the-machine-commander/bright-palm-soul-awakener/femme-fatale-bright-palm-soul-awakener-moc-16802360230.jpg)