Magosi, the Waterveil 用法? - 魔法風雲會

Magosi, the Waterveil

Land
Magosi, the Waterveil enters the battlefield tapped.
{T}: Add {U} to your mana pool.
{U}, {T}: Put an eon counter on Magosi, the Waterveil. Skip your next turn.
{T}, Remove an eon counter from Magosi, the Waterveil and return it to its
owner's hand: Take an extra turn after this one.

比賽中很少看見

即使看到了對手也常沒用它做啥事比賽就結束了

這張使用時機到底在哪阿?

有大大能詳細解說一下嗎?


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