From their Rules Packet...

Tickets to the Texas Open Grand Tournament include a 3-day pass to the WaCon Game Convention and entry into the Grand Tournament. Tickets may be purchased at www.wacogamecon.com.
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Saturday 9am – 9:45am............................................ ........Check In
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Saturday 10am – 1pm............................................... ..........Round 1
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Saturday 1:30pm – 4:30pm............................................ ...Round 2
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Saturday 5:00pm – 8:00pm............................................ ..Round 3
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Sunday 9am – 9:45am............................................ ..........Check In
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Sunday 10am – 1pm............................................... ............Round 4
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Sunday 1:30pm – 4:30pm............................................ .....Round 5
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Sunday 5:00pm............................................ .....Awards CeremonyArmy Composition
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2000 point limit
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2 total detachments, of which 1 must be a CAD or faction-specific detachment (currently Orks only)
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1 CAD/Faction-Specific Detachment
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Detachments may be chosen from a maximum of one codex or codex supplement
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Units added to a faction through means other than a codex or codex supplement (dataslates, Forge World, etc.) are excepted from this rule
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Forge World units with a profile in a Forge World book and a codex or codex supplement use the codex/supplement rules
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0-1 Allied Detachment
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Come the Apocalypse allies are not allowed
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Your allied detachment may not be the same as your CAD
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0-1 Formation
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No fortification or Apocalypse-only fomations are allowed
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0-1 Fortification chosen from the following list (rules found in Stronghold Assault)
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Aegis Defense Line
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Fortress of Redemption
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Imperial Bastion
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Prometheum Relay Pipes
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Skyshield Landing Pad
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Void Shield Generator
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Firestorm Redoubt
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Vengeance Weapons Batteries
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Lords of War are not allowed