Cumulative upkeep {U} (At the beginning of your upkeep, put an age counter on this permanent, then sacrifice it unless you pay its upkeep cost for each age counter on it.)

Whenever an Island is tapped for mana, its controller may add an additional {U}. If that Island is snow, its controller may add an additional {U}{U} instead. Spend this mana only to pay cumulative upkeep costs.

Cumulative upkeep {U} (At the beginning of your upkeep, put an age counter on this permanent, then sacrifice it unless you pay its upkeep cost for each age counter on it.)

Whenever an Island is tapped for mana, its controller may add an additional {U}. If that Island is snow, its controller may add an additional {U}{U} instead. Spend this mana only to pay cumulative upkeep costs.

累积维持{U}（在你的维持开始时，在此永久物上放置一个岁月指示物，然后除非你为其上的每个岁月指示物各支付维持费用，否则牺牲之。）

每当横置一个海岛以产生法术力时，其操控者可以额外加{U}。如果该海岛是雪境，则改为其操控者可以额外加{U}{U}。此法术力只能用来支付累积维持费用。