Niv-Mizzet, Parun is the textbook commander for this style: you control the early turns with counters and removal, then use those spells to protect Niv during a Curiosity combo finish
Selvala, Heart of the Wilds This three-drop mono-Green legendary Elf taps with a Green for mana equal to your highest-powered critter, so at least 2 with her counting her own 2/3 body
The card has a combo shift cost of four ink and comes with The Power of Friendship ability, which states that when this character is banished, if any of the cards that were under them are character cards, you may play those characters from your discard pile for free
Shes been a great way to recover after wraths in many decks, and helps you get cast triggers
However, Bears are still a powerful type in their own right and can do a surprising amount of damage with the right Commander