Lightmine Field [Rise of the Eldrazi] Dinosaur Mutant you may reveal cards from

you may reveal cards from the top of your library until you reveal a creature card that shares a creature type with it

Activated abilities of sources with the chosen name can't be activated unless they're mana abilities

Set: Alpha Edition Type: Instant Rarity: Common Cost: {X}{B} Target creature gets +X/+0 until end of turn

timey-wimey stuff

Set: The Brothers' War Retro Artifacts Type: Artifact Rarity: Uncommon Cost: {2} When Ichor Wellspring enters the battlefield or is put into a graveyard from the battlefield

Lightmine Field [Rise of the Eldrazi] Dinosaur Mutant you may reveal cards fromSet: Rise of the Eldrazi Type: Enchantment Rarity: Rare Cost: {2}{W}{W} Whenever one or more creatures attack, Lightmine Field deals damage to each of those creatures equal to the number of attacking creatures. If you want to kill a lot of goblins, just make sure your defenses look like fun.