Arena

This room is for training high-level creatures, like Death Knights.

Tile Cost: 2000 Gold
Per Tile Bonus: None
Per Tile Bonus(Level 4+): +1% All Creatures Damage

Level	Upgrade Requirements	Upgrade Time	Benefits	Accumulated Benefits
Level 1	Proving Ground 5	N/A	none	none
Level 2	1 000 Gold 2 Steel Ingot	1 hour	+10% Arena Training Speed	+10% Arena Training Speed
Level 3	4 000 Gold 18 Steel Ingot 6 000 Iron 600 Deep Ochre	3 hours	+10% Arena Training Speed +1 Training Queue Size	+20% Arena Training Speed +1 Training Queue Size
Level 4	30 000 Gold 40 Steel Ingot 1 200 Deep Ochre 10 Dense Iron Ingot	6 hours	+10% Arena Training Speed +1 Training Queue Size	+30% Arena Training Speed +2 Training Queue Size
Level 5	150 000 Gold 100 Steel Ingot 5 Mithril Ingot 2 200 Deep Ochre 12 Dense Iron Ingot	12 hours	+20% Arena Training Speed +1 Training Queue Size	+50% Arena Training Speed +3 Training Queue Size

Benefits of increasing level replace the previous level and stack with the bonus from tiles.

Requirements

Research: D16 Advanced Combat Training
Room: Proving Ground Level 5