Susan Foreman makes an excellent Doctors companion, coming down on Turn 2, and if your mana works out, you can cast The Fifth Doctor on Turn 3
There is a nice life gain added to it to help justify the increased mana, but I would much rather have my suggestion of Portal Manipulator
If a creatures toughness reaches 0, it is destroyed
No matter if youre looking to buff your guys, ramp your mana gain, or punish your opponent, the right enchantment can rapidly back your opponent into a corner and land you the win, making them one of the most important card types in the game
You announce, Ill regenerate and you move to damage
These TCG card types stay true to the character's core, but bring a new aspect of their personality to the forefront