Malgoth, Lord of the Shore

Armored X - This card enters the battlefield with
X armor counters, and when this card takes damage, you may remove any amount of counters from this card, and prevent that much damage.
All crabs gain Drum (Whenever another Crab creature enters the battlefield, reveal the top card of your library. If the revealed card is a crab, you may cast it by paying (1) for each crab you control minus X.)