世界の源獣
伝説のエンチャント（土地）
：ターン終了時まで、エンチャントされている土地はトランプルを持つ８/12の伝説のスピリット・クリーチャーになる。 それは土地でもある。
エンチャントされている土地がいずれかの墓地に置かれたとき、あなたは世界の源獣をあなたの墓地から手札に戻してもよい。
Illustrated by
Betrayers of Kamigawa#151RareJapaneseLegality
Rulings
A noncreature permanent that turns into a creature can attack, and its 
abilities can be activated, only if its controller has continuously controlled that permanent since the beginning of their most recent turn. It doesn’t matter how long the permanent has been a creature.
Activating the ability that turns it into a creature while it’s already a creature will override any effects that set its power and/or toughness to a specific number. However, any effect that raises or lowers power and/or toughness (such as the effect created by Giant Growth, Glorious Anthem, or a +1/+1 counter) will continue to apply.