He destroyed the field and his Zoo deck won Grand Prix Singapore. Read the coverage here

Tomoharu Saitou's deck

4 Bloodstained Mire

1 Forest

1 Mountain

1 Plains

2 Sacred Foundry

3 Stomping Ground

1 Temple Garden

4 Windswept Heath

4 Wooded Foothills

3 Gaddock Teeg

1 Isamaru, Hound of Konda

4 Kird Ape

4 Mogg Fanatic

4 Tarmogoyf

4 Wild Nacatl

4 Woolly Thoctar

2 Incinerate

4 Lightning Helix

4 Path to Exile

3 Seal of Fire

2 Umezawa's Jitte

Sideboard

1 Ancient Grudge

3 Oblivion Ring

4 Pyrostatic Pillar

3 Ranger of Eos

1 Rule of Law

3 Volcanic Fallout