Oath of Ajani

Oracle Text
When Oath of Ajani enters the battlefield, put a +1/+1 counter on each creature you control.
Planeswalker spells you cast cost
less to cast.When Oath of Ajani enters the battlefield, put a +1/+1 counter on each creature you control.
Planeswalker spells you cast cost
less to cast.
He's extremely experienced and has intentions for the multiverse that should be of interest to the current gatewatch
If you cast midgame, you pump more creatures, and setup Turn 5 Sorins, Big Chandras, Ajanis, etc.
If you cast lategame, you pump lots of creatures, and setup counter-proofed planeswalkers, or be able to play both a walker and have removal as a backup to protect them.
IMO it seems like a good card throughout the whole game, and will see heavy play as a result, at least in decks that benefit most from the counters, like GWx Tokens.