Every card that exists on Arena and is legal in Pioneer is legal in Explorer, and nothing more than that
You can name a specific card that creates those tokens, but that's as far as this needle goes
The new ability, Vanish , keeps the Giant Cobra protected from actions , or at least ensures mutal destruction
Grixis Dragons - Magic 2019 Standard | ASTRALPLANE, (5-0) MTGO Creatures (20) 2 Demanding Dragon 2 Pia Nalaar 4 Glorybringer 4 Goblin Chainwhirler 4 Nicol Bolas, the Ravager 4 Scrapheap Scrounger Planeswalkers (5) 2 Sarkhan, Fireblood 3 Chandra, Torch of Defiance Instants (8) 2 Magma Spray 2 Unlicensed Disintegration 4 Abrade Artifacts (2) 2 Heart of Kiran Lands (25) 6 Mountain 1 Scavenger Grounds 2 Aether Hub 4 Canyon Slough 4 Dragonskull Summit 4 Spirebluff Canal 4 Sulfur Falls Sideboard (15) 1 Angrath, the Flame-Chained 1 Magma Spray 1 Hour of Glory 1 Spit Flame 2 Chandra's Defeat 3 Negate 1 Banefire 2 Doomfall 3 Duress When Sarkhan, Fireblood and Chandra, Torch of Defiance come together in the same deck, you have the possibility of some explosive turns
