Once a creature that has reach because of Sphere Grid's last ability has blocked a creature, removing all +1/+1 counters from that creature or causing Sphere Grid to leave the battlefield won't cause that creature to stop blocking
If heads, you miss
The Dwarf Cards As far as on-board tricks go, Dwarven Sea Clan isnt the worst

Abattoir Ghoul Aegar, the Freezing Flame Aegis of the Legion Agent's Toolkit Angelheart Vial Anowon, the Ruin Thief Apex Altisaur Arcbond Archangel of Thune Archangel of Thune Archon of Sun's Grace Auntie's Snitch Aurora Eidolon Axelrod Gunnarson Backfire Barbed Servitor Baron Sengir Bellowing Aegisaur Binding Agony Black Panther, Claws of Bast Black Panther, Hope Enduring Black Panther, Most Dangerous Blazing Sunsteel Blessed Sanctuary Bloated Contaminator Blood Cultist Blood Hound Bloodlord of Vaasgoth Bloodroot Apothecary Body of Knowledge Bogardan Lancer Boros Mastiff Boros Reckoner Brash Taunter Broodhatch Nantuko Bushi Tenderfoot Cacophodon Captain America, Steve Rogers Cephalid Constable Cephalid Illusionist Chandra's Incinerator Chandra's Phoenix Chandra's Spitfire Chandra, Fire of Kaladesh Changeling Hero Coalhauler Swine Contested Game Ball Crag Saurian Crossway Troublemakers Darien, King of Kjeldor Daybreak Coronet Death Pits of Rath Deep-Slumber Titan Deftblade Elite Desmond Miles Diseased Vermin Donna Noble Dread Slaver Drogskol Reaver Drogskol Reinforcements Dromad Purebred Druid's Call Estinien Varlineau Eternal Thirst Expedited Inheritance Ezio Auditore da Firenze Faithful Squire Faithful Squire Fall of Cair Andros Family's Favor Favored Hoplite Feldon, Ronom Excavator

Also, the PowerAll Deluxes price and availability fluctuate quite a bitif its over $100, we recommend that you choose our upgrade pick instead