Howling Mine [Revised Edition] Arlinn Whenever a creature you control

Whenever a creature you control of the chosen type enters the battlefield or attacks

Set: World Championship Decks 1999 Type: Land Rarity: Rare When you play another land

Set: Bloomburrow Type: Legendary Creature — Otter Wizard Rarity: Rare Cost: {3}{U}{R} Whenever you cast a spell

It is found here

you may attach target Aura or Equipment attached to a creature you control to target creature you control

Howling Mine [Revised Edition] Arlinn Whenever a creature you controlSet: Revised Edition Type: Artifact Rarity: Rare Cost: {2} At the beginning of each player's draw step, if Howling Mine is untapped, that player draws an additional card.