Tainted Observer is a Magic: The Gathering card. Compare listings from Singapore Magic: The Gathering sellers on CardJio, then jio them on WhatsApp.
Mana cost
{1}{G}{U}
Mana value
3
Type
Creature — Phyrexian Bird
Color
Green/Blue
Color identity
Green/Blue
Power/Toughness
2/3
Keywords
Flying, Toxic, Proliferate
Card Text
Flying
Toxic 1 (Players dealt combat damage by this creature also get a poison counter.)
Whenever another creature you control enters, you may pay {2}. If you do, proliferate. (Choose any number of permanents and/or players, then give each another counter of each kind already there.)