Thallid Shell-Dweller (TSP) from Time Spiral, available at 401 Games Canada.

• Rarity: Common
• Finish: Normal
• Artist: Carl Critchlow
• Card Text:
  Defender
  At the beginning of your upkeep, put a spore counter on Thallid Shell-Dweller.
  Remove three spore counters from Thallid Shell-Dweller: Put a 1/1 green Saproling creature token into play.