Requires

Words of Wilding must be on the battlefield. Mana Echoes must be on the battlefield. Kindred Discovery must be on the battlefield. "Bear" chosen with Kindred Discovery. You have a way to draw a card or put a Bear onto the battlefield or declare a Bear as an attacker. Mana needed:

Steps

1. Activate Words of Wilding.
2. The next time you would draw a card, create a 2/2 bear token.
3. Mana Echoes and Kindred Discovery trigger.
4. Allow Mana Echoes to resolve first, adding for each bear you control.
5. Before Kindred Discovery resolves, activate Words of Wilding, replacing your next draw with the creation of a 2/2 bear.
6. Repeat for infinite bears and colorless mana.

Results