Tamiyo, Sage of Tides

: When Tamiyo ETB create a legendary artifact with "lands with tide cts have "tap, remove a tide cts: add {u}" and no other activated abilities"
+2: Put a tide counter on up to two target lands.
-1: This ability has flash. Counter target spell with mana cost X. Exile Tamiyo and return her to the battlefield transformed with X tide counters.