Tap Sunscape Apprentice for {U} to put Wormfang Manta on top of your library.
Wormfang Manta's LTB triggers, granting you an extra turn after this one.
Activate Mastery of the Unseen for {3}{W} to manifest Wormfang Manta.
Pay {5}{U}{U} to turn it face up.
Repeat for infinite turns.

Infinite turns

Lock

Wormfang Manta

Mastery of the Unseen

Sunscape Apprentice

Tap Civic Guildmage for {U} to put Wormfang Manta on top of your library.
Wormfang Manta's LTB triggers, granting you an extra turn after this one.
Activate Mastery of the Unseen for {3}{W} to manifest Wormfang Manta.
Pay {5}{U}{U} to turn it face up.
Repeat for infinite turns.

Civic Guildmage

Tap Shadow Guildmage for {U} to put Wormfang Manta on top of your library.
Wormfang Manta's LTB triggers, granting you an extra turn after this one.
Activate Mastery of the Unseen for {3}{W} to manifest Wormfang Manta.
Pay {5}{U}{U} to turn it face up.
Repeat for infinite turns.

Shadow Guildmage

Tap Nightscape Apprentice for {U} to put Wormfang Manta on top of your library.
Wormfang Manta's LTB triggers, granting you an extra turn after this one.
Activate Mastery of the Unseen for {3}{W} to manifest Wormfang Manta.
Pay {5}{U}{U} to turn it face up.
Repeat for infinite turns.

Combos with "Mastery of the Unseen"