#I would also argue that Wrenn only bonded with the tree and goes into this mad adventure because Realmbreaker sang to her

[beastofhearts]

Why Lukka and Not Wrenn

I seen people making this compassion and I don't really get it.

Realmebreaker DID try to infect Wrenn when she bonded with him and we see her suffering and struggling for it. But she did had some defenses against it thanks to Melira’s magic (At least I think she does) and Chandra’s help to keep her anchor and fuel her will. She is aware of Realmbreaker intent and -because of it- fights against it.

Lukka, on the other hand, started to accept he creature opinions and ideas and loosing track of his own (Like not realizing he changed paths). That was his downfall. He never realized he was being corrupted and so, he couldn't fight it.

In summary: A) Different creatures and how they tried to complete their planeswalkers B) Different planeswalker with different personalities/knowledge. C) Different assets to deal with the infection.

PS: She wasn't completed but she payed a high price to avoid doing so and bond with the Realmbreaker