Riftbound Gear: Seal of Strength. [T]: [Reaction] — [Add] [C]. (Abilities that add resources can't be reacted to.)
Riftbound Spell: Deathgrip. [Reaction] (Play any time, even before spells and abilities resolve.) Kill a friendly unit to give +[M] equal to its Might to another friendly unit this turn. Draw 1.
Riftbound Unit: Mageseeker Investigator. Opponents must pay [A] for each unit beyond the first to move multiple units to my battlefield at the same time.
Riftbound Battlefield: Risen Altar. [Empower] costs of your units here cost [1] or [A] less.