Overview
I think Karina is a good mid, the first one used in mid seems useless but I saw potential in her like Gusion mid, the others I think are good especially in the late game
Strengths
Karina is strong early on because her ultimate is especially effective when she kills and her first kill is when the enemy's attack is effective. Her damage is also strong.
Weaknesses
His weakness is like Jawhead and Belerik and the others, he has crowd control when he is guessed and then immediately, just like Eudora, the second, when Eudora is second then immediately be careful.
Karina item
That's the item for Karina for me because rapid boots for speed genius wand for crit damage and lightning trucheon for extra holy for extra magic power and divine for durability and last
Assassin
Rupture emblem when you attack the enemy, extra magic power Master assassin because when you kill a hero, he increases his damage by %7 which helps speed up his damage. Killing spree So when you're one on one, it's like you're equal, but when you're on a killing spree, you're even more superior to the enemy because you have instant 15% hp recovery.
Battle Spell
This is what I recommend to you, mid karina to catch up with my opponent, when you do an ulti out flick back to escape
Karina
First help the buff and clear the mid, then help the cabbage and if you know you're going to lose in the tertel fight, just trade their tower, that's it
Best With Obsidia
Because I'm going to try to play it again because I really need a good game with him, like your hero is small.
Watch Out For Jawhead
If Jawhead hits you, you're done because you didn't counter his first kill, so you need to get ahead of him right away because Karina is strong when you're a damage item.