Is Clay Champion legal in Standard, Modern, and Commander?

Clay Champion is legal in: Modern, Pioneer, Legacy, Vintage, Commander, Historic.

What type of card is Clay Champion?

Clay Champion is an Artifact Creature — Construct. Its oracle text reads: "This creature enters with three +1/+1 counters on it for each {G}{G} spent to cast it. When this creature enters, choose up to two other target creatures you control. For each {W}{W} spent to cast this creature, put a +1/+1 counter on each of them."

Clay Champion

Artifact Creature — Construct

This creature enters with three +1/+1 counters on it for each spent to cast it.

When this creature enters, choose up to two other target creatures you control. For each spent to cast this creature, put a +1/+1 counter on each of them.