Kaldra Compleat [Modern Horizons 2] SV54 the Sword Coast Adventurer’s Guide

the Sword Coast Adventurer’s Guide provides the setting

"Be careful when handling old magical trinkets

Set: Lorwyn Type: Creature — Elemental Incarnation Rare Cost: {3}{B}{B}{B} Fear (This creature can't be blocked except by artifact creatures and/or black creatures

Hardheaded and stubborn

Set: Commander 2011 Type: Enchantment Uncommon Cost: {1}{G}{W} Whenever a creature enters the battlefield under your control

Kaldra Compleat [Modern Horizons 2] SV54 the Sword Coast Adventurer’s GuideSet: Modern Horizons 2 Type: Legendary Artifact Equipment Rarity: Mythic Cost: {7} Living weapon Indestructible Equipped creature gets +5 +5 and has first strike, trample, indestructible, haste, and "Whenever this creature deals combat damage to a creature, exile that creature." Equip {7}