You don't see these decks much online, but if you play against them, you better
Usually 50% low dice required creature cards and 50% high required creature
cards in your deck.
Low dice creature cards to lock your enemy and high dice required creature cards
to do the insane damage.
For example: use Mothmants or rappies to lock your enemy and use a dark belra
to damage your enemy from far away.
Add damage cards won't be necessary since you are going for the defence.
Be sure to have a lot of defence cards in your deck.
For the FO Ark decks you are going to focus on technique cards. Pick enemy
cards with good +TP. Usually the mid dice required creature cards have more +TP
and are actually good for both offence and defence.
Also creature cards like Gi Gue can take damage intended for your main character
If someone tries to hit you directly, a creature card can take the damage instead
of your main character card. These creature cards required high dice, but are
very good in a defensive deck.