A couple of cards like Involuntary CooldownInvoluntary Cooldown have taken stun counters a step further to let you put them on artifacts too, which is very nice, turning off mana rocks or vehicles for a turn, and after jumping through quite a lot of hoops The Watcher in the WaterThe Watcher in the Water will stun a nonland permanent
General Kreat, the Boltbringer You'll love this if you love Goblins
If the Army creature you chose isn't already an Orc, it becomes an Orc in addition to its other types
He makes games unwinnable much faster than many cards too which is nearly as good as winning the game
Vislor Turlough Vislor Turlough is similar to Xantcha, but it can be a bit more punishing to the player you give it to
It might seem non-threatening, but this creature ramped up its power and toughness by copying it from other Eldrazi played