Lore is essentially a victory point, with the goal of Lorcana being to reach 20 before the opponent to secure the win, so having four Lore is nothing to sneeze at
It has the same play pattern it had in Ravnica: City of Guilds, Magic 2015, and Modern Masters 2015: play cheap creatures to accelerate into more expensive threats
The answer, probably, is it depends which format we're talking about
Doctors and companions work together using the Doctors Companion mechanic, which is a variant of Partner, allowing both the Doctor and their companion to operate as commanders from the command zone
Casting Cost: Card Type: Legendary Creature - Human Power / Toughness: 3 / 2 Card Text: Haste Whenever you cast your second spell each turn, untap target creature, then investigate
I got you, exile and draw the business card