There is No Coalitions capable to reach Ring Level close to 100.
There is No Coalitions capable to reach Ring Level above close to 100 so No Holy Bond to All.
For Rings 81 to 100 Coalition needs 20*27= 540 Grade V
The Most Majority of Challengers have power more than 12550.
One Full upgrade Guardian Grade V has power without skill stones 12550 which is not enough to defeat the Challengers. Skill stones for Grade V only heavy Coiners buy.
To reach a Coalition Ring Level 100 must have a lot more than 540 Grade V Guardians and the Majority of them must be enlighten one time and be rank 6 in order to defeat the Challengers.
In order to Win a Holy Bond Players must have Grade V Guardians but to have them you need Holy Bonds to obtain Grade V Guardians.
So with no Holy Bonds you cannot win Holy Bonds.