LTR: Boromir, Warden of the Tower (Showcase Scrolls) Sylvan Learning Every White Mountain Puzzle includes

Every White Mountain Puzzle includes our HAPPINESS GUARANTEE: If you are not completely delighted with your puzzle experience

then put up to seven permanent cards from your hand onto the battlefield

Captain Hook

you may gain control of target creature for as long as you control Roil Elemental

Whenever a player casts a spell

LTR: Boromir, Warden of the Tower (Showcase Scrolls) Sylvan Learning Every White Mountain Puzzle includesVigilance Whenever an opponent casts a spell, if no mana was spent to cast it, counter that spell. Sacrifice Boromir, Warden of the Tower: Creatures you control gain indestructible until end of turn. The Ring tempts you.