The price changed to 16/19/22/24 in v0.52
Quick Stat: Dragon Edit
|Tier 1||Tier 2||Tier 3||Tier 4|
Tier 2: Dragon+ Edit
To Upgrade from Dragon to Dragon+, you need 3 Dragon and 150 Dragon Coins.
Tier 3: Dragon++ Edit
To Upgrade from Dragon to Dragon++, you need 3 Dragon+ and 600 Dragon Coins.
Tier 4: Dragon+++ Edit
To Upgrade from Dragon to Dragon+++, you need 3 Dragon++ and 3000 Dragon Coins.
Strategy: Dragon Edit
The dragon, due to unrivaled coverage (no other unit has range 2 all unblockable), has very few shortcomings and is a very valued part of every army. However, its high costs often mean sacrificing the power of other champions; low-level armies may not be able to cover or support the dragon.
Strength: Dragon Edit
The dragon is a very powerful piece that holds nearly absolute control over the area around it. Because of its unblockable attacks, one can attack multiple pieces at a time easily. In the early game, an adequately upgraded dragon wreaks havoc over badly positioned units and minions.
The dragon's defensive capabilities are also unrivaled, simultaneously protecting up to 9 pieces from its starting position. The versatility of dragon makes it one of the strongest pieces in the game.
Dragon is also one of the only pieces that can force a king capture without any support from other pieces, making it a very strong attacking piece, particularly in the late game, where minions are less likely to hinder its movement.
The dragon, despite it's marvelous coverage, has few shortcomings in skirmishes around itself. However, due to its fairly short range (it can only travel up to 3 squares in any direction at +++), a skilled opponent can abuse that and attack areas of the board that the dragon cannot reach. That is a weakness similar to the knight's: it can only pressure or cover a single portion of the board at a time.
Other tactical abuses include pins and skewers than can be forced. Finally, a cornered dragon is practically useless; a few pieces can trap it with no problem, thus leading to a game ending trade.