Tree of Redemption does not have summoning sickness.
({6} magic symbol) ({G} magic symbol) ({W} magic symbol) ({U} magic symbol) plus enough mana to pay for commander tax, if applicable available.
Steps
On the end step prior to your turn, activate Winding Canyons' second ability by paying ({2} magic symbol) and tapping it, allowing you to cast creature spells this turn as though they have flash.
Cast Storvald either from your hand or from the command zone by paying ({4} magic symbol) ({G} magic symbol) ({W} magic symbol) ({U} magic symbol) and commander tax, if applicable.
When Storvald enters the battlefield, it triggers, causing Tree or Redemption's power and toughness to become 1 until end of turn.
Activate Tree of Redemption by tapping it, causing your life total to become 1.
At the beginning of your upkeep, Near-Death Experience triggers, causing you to win the game.
Results
Win the game at the beginning of your next upkeep.