Marcus, Ever Lucky

Marcus' power and toughness are each equal
to the number of Islands you control.

Whenever Marcus enters or attacks, put a
flood counter on target land. It's an Island in
addition to its other types for as long as it has a flood counter on it.

The first instant or sorcery spell you cast each turn
costs {u} (or {1}) less to cast for each land you control
with a flood counter on it.