It is both cheap to cast and its ability is easy to use, allowing you to take advantage of Magewright's Stone right away
The myriad creature tokens also pair quite well with a card like Dragon Tempest
Now it looks like this: 40 non-Foil promos in standard card format as incentives for pre-registering 8 Enchanted Foil promos for Top 8 1 Champion Playmat for the winner So were losing the non-Champion playmat, but gaining promos for people attending
Cards like Valorous Stance, Repel Calamity, and Pillar of Light all remove creatures with a certain minimum toughness at a cheap casting cost
Whenever a creature dealt damage by Madame Vastra this turn dies, create a Clue token and a Food token
If youre just curious about the format, building your first deck, or trying to take your Commander deck up a notch, here are some handy links: Commander Primer Part 1 ( Why play Commander