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The first time you copy a Sword of Hearth and Home with this is going to feel amazing, and thats only one of the many interesting things you can do with it

Like so many other recurring mechanics without an official name, this has been named after the first card where it appeared, Act on Impulse

Moreover, The Spear of LeonidasThe Spear of Leonidas (which is fast becoming my favorite UB card

Sacrifice decks often tend to run ways to retrieve cards from their graveyard, so you can keep reusing this land to get excellent mana fixing while empowering your board

This leaves literal thousands of creatures to go through and whittle down

In addition to being a great mana rock and callback to Coalition Relic, this card is simply waiting to be used as an infinite mana outlet