I think Thought-Knot Seer is the most versatile of the three
So as much as I would love to be able to say my creatures are Zombie Eldrazi, unfortunately they will not be
Anytime you cast a white spell, your legendary creatures all gain a +1/+1 counter and vigilance till end of turn
Creature Artifact - Robot Color tag templates(None) Nanoform Sentinel Whenever this creature becomes tapped, untap another target permanent
At DCI-sanctioned events, judges will sometimes print out proxies when cards are accidentally damaged during play, like if water was spilled on the table or someone was shuffling a bit too aggressively
Whenever you cast a noncreature spell, if at least four mana was spent to cast it, put a +1/+1 counter on The Emperor of Palamecia