Card & Companions

Honestly these systems are shit.

Cards:

Basically use Titus and Kalligar. You get them from doing the story quest to from Apex to level 70.

Kalligar will only apply when fighting boss the same type of monster as him which is most right now thankfully.

If you don't mind farming you can also get Batia's Hulk from the monsters near the ship in Tempest Reach and that gives you pretty decent Physical crit power. An alternate is Energy Transfer Post and Crayfish together.

There are better cards like Hasmina and Blood Festival Elin that have more physical amplification but they come from events so you can't get them regularly. Game is dumb.

Pets:

There are basically 2 types of pets that grant stats on a timer:

1. Gives you power

2. Gives you amplification

The timer lasts quite a while so you could effectively have it up 100% of the time and macro it to your brooch or something. They give you a free 12 power pet once you hit 70 and do a short quest. If that's not good enough, pay to win for the amplification pets.