Mirrorshell Crab | Artifact Creature | Crab | Ward {3} (Whenever this creature becomes the target of a spell or ability an opponent controls, counter it unless that player pays {3}.)
Channel — {2}{U}, Discard Mirrorshell Crab: Counter target spell or ability unless its controller pays {3}. | Cristi Balanescu
1.5 LSV
Walking Skyscraper | Artifact Creature | Construct | This spell costs {1} less to cast for each modified creature you control. (Equipment, Auras you control, and counters are modifications.)
Trample
Walking Skyscraper has hexproof as long as it's untapped. (It can't be the target of spells or abilities your opponents control.) | David Auden Nash
3.0 LSV