I have also been loving the Japanese list as well. I don't play Tasigur though. I favor Gurmag Angler more because the 5/5 stat trades with Reality Smasher and opposing Gurmag Anglers. Tasigur being Legendary isn't great too because there is a lot more DnT in my meta compared to the Japanese meta. Saving Tasigur or making a pseudo-vigilance with your own Karakas is a corner case. The card advantage that Tasigur makes is only really helpful in a handful of grindy MUs. Especially now with Leo, your opponent would most likely give you a cantrip. This is where I am currently at:
23 Lands
1 Creeping Tar Pit
4 Flooded Strand
2 Island
1 Karakas
1 Marsh Flats
1 Plains
4 Polluted Delta
1 Scrubland
1 Swamp
3 Tundra
2 Underground Sea
2 Wasteland
9 Creatures
2 Gurmag Angler
2 Snapcaster Mage
4 Stoneforge Mystic
1 Vendilion Clique
28 Other Spells
4 Brainstorm
1 Counterspell
4 Force of Will
1 Spell Pierce
4 Swords to Plowshares
1 Council's Judgment
1 Inquisition of Kozilek
2 Lingering Souls
2 Ponder
3 Thoughtseize
1 Batterskull
1 Engineered Explosives
1 Umezawa's Jitte
2 Jace, the Mind Sculptor
Sideboard:
1 Containment Priest or Rest in Peace
1 Notion Thief
1 Sanctum Prelate
1 Disenchant
1 Flusterstorm
1 Negate
1 Path to Exile
2 Surgical Extraction
1 Supreme Verdict
1 Humility
1 Crucible of Worlds
1 Pithing Needle
1 Sword of Feast and Famine
1 Nahiri, the Lithomancer