Otakemaru, the Wrathful

Haste, Trample
When Otakemaru enters the battlefield, you may search your library for up to three artifact
equipment cards, reveal them, put them into
your hand, and shuffle your library.
At the beginning of your upkeep, if you control exactly three artifacts, put a +1/+1 counter on Otakemaru.
If Otakemaru has three artifacts attached to him,
he is indestructible and has double strike and vigilance.