Sandsteppe Mastodon + Stampeding Serow + Sage of Hours

Prerequisites

• Sage of Hours has the lowest toughness or is tied for the lowest toughness among creatures you control.

Steps

1. 1Cast Sandsteppe Mastodon by paying .
2. 2Sandsteppe Mastodon enters the battlefield, putting five +1/+1 counters on Sage of Hours.
3. 3Activate Sage of Hours by removing all +1/+1 counters from it, causing you to take at least one extra turn after this one.
4. 4Move to your next turn.
5. 5At the begging of your upkeep, Stampeding Serow triggers, causing you to return Sandsteppe Mastodon from the battlefield to your hand.
6. 6Repeat.

Effects

• Infinite turns
• Lock