Keening Stone

As this creature enters, choose a creature type. This creature is the chosen type in addition to its other types. Other creatures you control of the chosen type get +1/+1.

Whenever you cast a spell, you gain 1 life for each spell you've cast this turn. Pay 50 life: This artifact deals 50 damage to any target.

Sacrifice a creature: Target player mills cards equal to the sacrificed creature's power.

Sacrifice a creature: Add CC.

This artifact enters with X charge counters on it. T: Choose a color. Add one mana of that color for each charge counter on this artifact.

Equipped creature gets +1/+1 for each land you control. Equip legendary creature 3 Equip 7

T: Add three mana of any one color.

Equipped creature gets +1/+0. Equip 1 (1: Attach to target creature you control. Equip only as a sorcery.)