The second skill allows you to play more units than you normally would be able to in a single turn. Also, as long as the first ability is active, you cannot use that skill.
Ryoma: First Prince of Hoshido
Class
Myrmidon ({{{class_type}}})
Cost
1
Symbol
Affinities
Attack
40
Support
10
Range
1
Quote
Skill 1
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Skill 2
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Support Skill
[Fighter's Emblem] When this supports an attack, your attacking unit gains +20 power until the end of battle.