Magic: The Gathering's Dominaria United reveals that Ajani is a sleeper agent

sportskeeda.com:

Over the past few Magic: The Gathering expansions, the Phyrexians have slowly been trickling in, teasing fans with impending war. Once Tamiyo was revealed to have become Compleated, joining the Phyrexians, fans were speculating if any other planeswalkers have been turned to the Phyrexians.

Thanks to the Magic: The Gathering developer stream, many cards were revealed, including one exciting one: Ajani, Sleeper Agent. It turns out that Ajani, the Leoninplanewalker, is working against Karn and aiding the Phyreixian invasion.

Ajani Goldmane is a familiar and popular planeswalker who is a part of the Gatewatch. Not a native of Dominaria, he traveled there to help Karn uncover the plot of the Phyrexians, or so it seemed. Unfortunately for the heroes, one of the noblest and most powerful planeswalkers is working against his allies.

There are several exciting facets of Ajani, Sleeper Agent, such as him featuring Phyrexian Mana, to make him come into play much faster than normal. He normally costs four mana - one green, white, and one white or green. But that green or white can instead be paid with two life.

This means he can come into play on turn 3 and can immediately start making himself a threat. Phyrexian mana is now under the umbrella of the “Compleated” mechanic, but there is a cost for using Phyrexian mana. If the player does this, it comes into play with two fewer loyalty counters.

It may be better to put it into play on Turn 4 instead. What can the planeswalker do, though?

The -6 ultimate ability is the reason it’s an excellent turn 4 card. Players will likely want to put that emblem into play as fast as possible. Poison Counters are a unique way to win in Magic: The Gathering and aren’t brought into expansions often.

If a