mtg gamma cards Swamp v.2 Vigilance (Attacking doesnt cause this creature to tap.) Then draw a card for each creature you control with a counter on it The Gamma Orb

Drawing two more cards, even if you have to cash in a token to do it, is one of the best things you can do in that scenario

Regal Caracal If it isnt already apparent, cats have a decent number of lords, and many either have or benefit from lifegain abilities

Molten Gatekeeper - a three-mana 2/3 that has a static ability that states whenever another creature enters under the player's control, they deal one damage to each opponent

Any time I see her in the play queue, I always wish I could say to the opponent, what point are you trying to prove by playing this card? Unlike Teferi, Time Raveler who is only powerful when played in the right deck, once Nissa resolves, the game is basically over if youre not also playing a Tier-1 deck of some sort