Granting ward doesn't do want you want. It's not like hexproof, the creature needs to have ward before it's targeted. Green is also tertiary in haste so I don't think it should be granting it

This card is a reference to the totemic (When this creature enters the battlefield, put your choice of a trample, ward , or haste counter on it.) mechanic, which is a primarily green but also Temur mechanic. I don't really have any issues with color pie stretching here for that reason. The ward comment is true though, I'll have to think about reworking this card.

Easiest solution is to make it a sorcery, to discourage people from playing it wrong

Changed to sorcery speed, adding a counter instead of end of turn effect, and removed the cantriping.