The Armorer

Forge Mastery - Whenever another equipment enters the battlefield under your control, gain a Beskar counter.

Forge Beskar Armor - {t} sacrifice 5 Beskar counters: Create an equipment token named Beskar Armor with “Equipped creature is a Mandalorian in addition to its other types and gets +0/+5.”

For the Youngling — Whenever you equip an equipment, the creature you control with the least toughness gains +0/+1 until end of turn. Activate only once each turn.