As a refresher, heres the original decklist: Tyranid Swarm Precon View on Archidekt Commander (1) 1 The SwarmlordThe Swarmlord Lands (39) 1 Ash BarrensAsh Barrens 1 Cave of TemptationCave of Temptation 1 Cinder GladeCinder Glade 1 Command TowerCommand Tower 1 Evolving WildsEvolving Wilds 1 Exotic OrchardExotic Orchard 8 ForestForest 1 Frontier BivouacFrontier Bivouac 1 Game TrailGame Trail 7 IslandIsland 7 MountainMountain 1 Opal PalaceOpal Palace 1 Path of AncestryPath of Ancestry 1 Rugged HighlandsRugged Highlands 1 Temple of AbandonTemple of Abandon 1 Temple of EpiphanyTemple of Epiphany 1 Temple of MysteryTemple of Mystery 1 Terramorphic ExpanseTerramorphic Expanse 1 Thornwood FallsThornwood Falls 1 Unclaimed TerritoryUnclaimed Territory Creatures (36) 1 AberrantAberrant 1 Acolyte HybridAcolyte Hybrid 1 Atalan JackalAtalan Jackal 1 BiophagusBiophagus 1 BroodlordBroodlord 1 ClamavusClamavus 1 Deathleaper, Terror WeaponDeathleaper, Terror Weapon 1 ExocrineExocrine 1 Gargoyle FlockGargoyle Flock 1 Genestealer LocusGenestealer Locus 1 Genestealer PatriarchGenestealer Patriarch 1 Ghyrson Starn, KelermorphGhyrson Starn, Kelermorph 1 HaruspexHaruspex 1 Hierophant Bio-TitanHierophant Bio-Titan 1 Hormagaunt HordeHormagaunt Horde 1 LictorLictor 1 Magus Lucea KaneMagus Lucea Kane 1 MalanthropeMalanthrope 1 MawlocMawloc 1 NexosNexos 1 Old One EyeOld One Eye 1 Purestrain GenestealerPurestrain Genestealer 1 RavenerRavener 1 Screamer-KillerScreamer-Killer 1 SporocystSporocyst 1 Termagant SwarmTermagant Swarm 1 TervigonTervigon 1 The Red TerrorThe Red Terror 1 ToxicreneToxicrene 1 Trygon PrimeTrygon Prime 1 Tyranid HarridanTyranid Harridan 1 Tyranid PrimeTyranid Prime 1 Tyrant GuardTyrant Guard 1 VenomthropeVenomthrope 1 Winged Hive TyrantWinged Hive Tyrant 1 ZoanthropeZoanthrope Sorceries (6) 1 CultivateCultivate 1 ExploreExplore 1 FarseekFarseek 1 Hull BreachHull Breach 1 Rampant GrowthRampant Growth 1 Tyranid InvasionTyranid Invasion Enchantments (8) 1 AbundanceAbundance 1 Bred for the HuntBred for the Hunt 1 Death's PresenceDeath's Presence 1 Hardened ScalesHardened Scales 1 New HorizonsNew Horizons 1 OvergrowthOvergrowth 1 Shadow in the WarpShadow in the Warp 1 The First Tyrannic WarThe First Tyrannic War Instants (4) 1 AetherizeAetherize 1 HarrowHarrow 1 Inspiring CallInspiring Call 1 StarstormStarstorm Artifacts (6) 1 Arcane SignetArcane Signet 1 Bone SabresBone Sabres 1 Goliath TruckGoliath Truck 1 Herald's HornHerald's Horn 1 Icon of AncestryIcon of Ancestry 1 Sol RingSol Ring Counter Balance Let's review the head honchos

Cost reductions always useful in green, and decks that want this sort of effect could use more mana sinks
As usual, two new Starter Decks are also releasing with the new set of Disney Lorcana cards
Jedit Ojanen, Mercenary Jedit Ojanen, Mercenary wants to be a legends-matter deck, but I say make it a legendary cats matter deck
The use-case of this being better than other counterspells is where there's a big instant or sorcery that you wouldn't be able to just normally counter if you had a regular counter instead