Adventage of guild-gladius cards.
Here is a suggegstion to new players.Join a great guild!
If you want to buy some powerful cards within bloodlust skill, just like Grum flameblade.
When monster within bloodlust skill kill one enemy,it gets +1 to all stats.(in slow rule speed will not +1)
There is only one way to buy gladius cards,join guild.
All gladius cards can very helpful to your battles.
If you want to play for free,play for a lot fun.
You can read my post before.
I use this strategy for two months.