Very slow. Such as Echo of Medivh, which also saw very limited play.
Control warrior hardly has more than 1 minion in play. Aggro/tempo/enrage warrior was never a thing (maybe now? Let's see their other stuff first...). Patron? Hm could be a possibility to refill your patrons in hand before a board wipe but too slow (and you would be short of new activators).
How utterly boring. Echo of Medivh for warriors... seriously? Disappointing. Card itself not bad if it hits 2+ minions and considering that warriors have plenty of whirlwinds available that's easy to do, but not sure if any deck apart from Patron will run this. There are better draw engines for warrior. Tho, it doesn't draw from deck, so control could run this, but then again, they have rarely more than a minion at a time. However, they also have plenty of mana to spare and getting another C'Thun Shield Maiden or something is pretty powerful.