Rose Tyler

Rose Tyler gets +1/+1 for each time counter on it.
Bad Wolf — Whenever Rose Tyler attacks, put a time counter on it for each suspended card you own and each other permanent you control with a time counter on it.
Doctor’s companion (You can have two commanders if the other is the Doctor.)

Vraska, Golgari Queen

+2: You may sacrifice another permanent. If you do, you gain 1 life and draw a card.
−3: Destroy target nonland permanent with converted mana cost 3 or less.
−9: You get an emblem with “Whenever a creature you control deals combat damage to a player, that player loses the game.”

Goblin Piledriver

Protection from blue (This creature can’t be blocked, targeted, dealt damage, or enchanted by anything blue.)
Whenever Goblin Piledriver attacks, it gets +2/+0 until end of turn for each other attacking Goblin.

Goblin King

Other Goblins get +1/+1 and have mountainwalk.

Goblin Sharpshooter

Goblin Sharpshooter doesn’t untap during your untap step.
Whenever a creature dies, untap Goblin Sharpshooter.
: Goblin Sharpshooter deals 1 damage to any target.

Goblin Lackey

Whenever Goblin Lackey deals damage to a player, you may put a Goblin permanent card from your hand onto the battlefield.

Goblin Bushwhacker

Kicker (You may pay an additional as you cast this spell.)
When Goblin Bushwhacker enters the battlefield, if it was kicked, creatures you control get +1/+0 and gain haste until end of turn.