Rapid Fire [Legends] Colorless Target creature defending player controls

Target creature defending player controls can block any number of creatures this turn

these devices doubled the output of Amrit Vatyam's forges

Set: Fifth Dawn Type: Artifact Creature — Construct Rare Cost: {4} No more than one creature can attack each combat

Some are filled with water

Set: Commander 2013 Type: Legendary Creature — Giant Soldier Mythic Cost: {3}{W}{U}{B} At the beginning of your upkeep

Rapid Fire [Legends] Colorless Target creature defending player controlsSet: Legends Type: Instant Rare Cost: {3}{W} Cast this spell only before blockers are declared. Target creature gains first strike until end of turn. If it doesn't have rampage, that creature gains rampage 2 until end of turn. (Whenever the creature becomes blocked, it gets +2 +2 until end of turn for each creature blocking it beyond the first.)