Invasion 3 3-Star (No CC):
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The dragon mage here does physical damage, but if you non-CC'd healers are lvl'd enough/have enough affection, they will out-heal even the magic damage one in this version (I did it in the JP version).
Ryujin King 3-Star: (you'll need an account at Niconico to view this)
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In this video he uses 2 CC'd healers top and bottom to heal his 2 duelists.
When I did it, I only had 1 CC'd healer at that point, so I used 1 CC healer top and 2 CC healers bottom instead and managed to 3-star it.
Not sure if you can get by with 4 non-CC healers (2 top, 2 bottom) instead though, but you can definitely do it with 1 CC and 2 non-CC.
Note that for non-CC'd healers, you can't put them directly above/below your duelist, or they'll get blown to bits by splash damage. You'll have to place them diagonally 1 spot to the left or right, kinda like this:
(empty spot) Tank/Duelist (empty spot)
Healer 1 (empty spot) Healer 2
For CC'd healers, you can place them up to 2 spots diagonally away.
Dragonewt 3-Star (No CC):
(In case ppl want to see the no-CC Dragonewt strategy I sent by PM earlier.)
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