While commanders like Drizzt Do'Urden, Gavi, Nest Warden, Jinnie Fay, Jetmir's Second, Jolrael, Mwonvuli Recluse, and Lord Windgrace give you tokens that are Cats (or Cat Warriors), theyre usually asking you to build around other strategies, not cats as a theme
Tom Bombadil Your summons are all going to eventually reach the last chapter, which is where Tom Bombadil comes in
A prominent creature type in Stronghold are the Spikes
Give [Card]Walking Ballista[/Card] Lifelink with Heliods ability, remove a counter from [Card]Walking Ballista[/Card], gain a life and put a +1/+1 counter on [Card]Walking Ballista[/Card], then rinse and repeat
It just comes in as a normal creature
Eternalize (, Exile this card from your graveyard: Create a token that's a copy of it, except it's a 4/4 black Zombie Snake Druid with no mana cost