Hyper
Guardian of Blooming Flowers is a hyper unique to the supporter role in Co-Op mode. The player can substitute it for their character's hyper card after reaching level 10 with the supporter role. It revives an ally with full HP, similarly to the supporter's fully upgraded Restoring Light ability.
Hyper Strategy
Guardian of Blooming flowers gives the supporter role yet another way to revive allies. This time, it is limited not by proximity or a cooldown, but by the player's norma level. This card is best used by characters who have good stats for the supporter role, but have a hyper card that does not aid their allies enough or is too restrictive to use. An example could be . While 
Big Bang Bell can be very useful against bosses with minions, it is not always reliable due to the possibility that the traps could be triggered early or not at all. The team could be better off with a more guaranteed effect in Guardian of Blooming Flowers.
The downside to using this hyper card is its high norma requirement. While and have many minions that the players can attack to gain wins, the other bosses can be quite difficult to level up against. Many characters that do well in the attacker role already have comparably strong hyper cards that they can play much sooner in the match, such as 
Cooking Time or 
Accelerator.