A player is considered poisoned if they have any poison counters, and they're considered corrupted if they have three or more poison counters
They can come into play untapped and tap for one of two different colors of mana, but they also have a second ability: you can flip them over to reveal a land that produces a different set of two colors of mana
Like the Orb, it limits the number of lands that can be untapped
Efficiency always matters but that goes double for creatures like these that you want to cast many times throughout a game
This card generates some of its own dinosaurs to buff if you suspend it, which can be worth the wait since the tokens have flying and are relatively strong once you get this Boros creature on the field
Farideh, Devil's Chosen is also an interesting payoff, allowing you to draw a card whenever you roll a 10 or greater (the base die is usually a d20, mind you)