What is the most effective way to execute the Heliod Walking Ballista combo in a game of Magic: The Gathering?

To execute the Heliod Walking Ballista combo in Magic: The Gathering, you need to have both cards on the battlefield. Start by giving Walking Ballista lifelink with Heliod's ability. Then, use Walking Ballista's ability to remove 1/1 counters to deal damage to your opponent. This will trigger Heliod's ability to create a 1/1 creature token, which in turn adds a 1/1 counter to Walking Ballista. Repeat this process to deal infinite damage to your opponent.