Noble Hierarch [Ultimate Masters] Gateway 2007 change Halfdane's base power and

change Halfdane's base power and toughness to the power and toughness of target creature other than Halfdane until the end of your next upkeep

put a -1/-1 counter on each creature

Counter target spell unless its controller pays {1}

In its heart lies the secret of immortality

If it's a creature

Noble Hierarch [Ultimate Masters] Gateway 2007 change Halfdane's base power andSet: Ultimate Masters Type: Creature Human Druid Rare Cost: {G} Exalted (Whenever a creature you control attacks alone, that creature gets +1 +1 until end of turn.) {T}: Add {G}, {W}, or {U}. She protects the sacred groves from blight, drought, and the Unbeholden.