Cursed Tree Advent

Important Note: They should be adding another way to get Crafting Currency on the patch around 10th April. Until then, you only have the one-time rewards from the Rift.
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This advent is a field boss + rift event, with a comparitively easy boss and rift stages. The bonus companions are also very good. Please use the following index to navigate quickly:
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The new companion Aries has pull and knockback immunity, making her potential for certain fights such as Green Cube Boss great. She also has higher HP than ATK as an adventurer, MSPD debuff removal, and two skills with very high mods (50% with 480% of original damage as bleed, and 800% every 6 attacks).
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It is the best PATK item to-date. 
Imagine the following item with double crit refines. (Full upgrade table can be found at Gear)
 Stats at +10
	PATK 	195
	Crit Rate	11%
	Crit DMG 	11%
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Using any of these companions gives you a bonus in currency both for field boss and rift. Since you have multiple attempts at field boss, you can burn off a majority of its hp in one fight, and kill it with a bonus party. 
			
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 Skill Table and Help
Name 	Description 	Help
Thorn Root 	A corrupt thorn surges out against the farthest target and inflicts magic damage. 	This deals the most damage before root (so first rift), and Celenia with rift dmg reduction gear easy handles it.
Thorn Bark 	The sharp thorns from the bark of the Corrupt Cherry Blossom Tree reflects damage from melee attacks within a certain distance. But it's tree bark, so it's weak against fire damage.	Elise with 90 range isn't reflected, but those with 70 or less range are. If one unit's damage is reflected, ALL melee damage is reflected regardless of range. As for fire damage, Jin Elina, Juhong and Antenore deal large amounts of damage on this boss, with the latter two preferred more.
Deep-rooted tree	The strong roots completely resist against Knock Back, Stun, and Pull effects. 	Pretty self-explanatory.
Dark 	After every 5 attacks, pours out a dark energy and inflicts magic damage to all enemies. 	This doesn't do a lot of damage, and your healer should have enough time to soak it up.
Swallow 	Every 8 hits received, inflits damage based on the HP of 1 target nearby. 	Can't be arsed to find out exactly who it hits, not worth it in the first rift at least.
General Guide:
As you can see,it's a weak ass boss with a ton of health. The battle devolves to a damage race: can you kill it before the timer runs out? 
You need only one or two healers: Elle and Celenia preferred. 
Although fire damage dealers are preferred (juhong with the new weapon is sick, and antenore always has been), Elise is extremely good for this boss because of his high HP. Give her something like Fire Witch's Hat with high ASPD and watch her go. Of course, for the rift boss it's better to use Rift Gear, but only old players have that.
No tank is required, at least for the first rift.
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Add friends who have strong Antenor/Elise to clear the bosses you can't yourself. Ask in the discord, even if you don't get a permanent spot, many people will be more than happy to give temporary friend spots. 
The whole rift is ridiculously easy. Even if you're very weak, friend units should carry you through all the floors easily. Use Ashes against the floor 100 boss if you're too weak, as its AoE might wipe you.