Powder Keg [Urza's Destiny]

Powder Keg [Urza's Destiny]Set: Urza's Destiny Type: Artifact Rarity: Rare Cost: {2} At the beginning of your upkeep, you may put a fuse counter on Powder Keg. {T}, Sacrifice Powder Keg: Destroy each artifact and creature with mana value equal to the number of fuse counters on Powder Keg.

which possess the stability of ancient mountains

showcase cards

or Dragon creature card from your hand onto the battlefield tapped and attacking that opponent

"It was probably a lousy spell in the first place

At the beginning of your next main phase

Tezzeret Type: Legendary Planeswalker — Elspeth Rarity: Mythic Cost: {2}{W}{W} +1: Create a 1/1 white Soldier creature token

Set: Portal Type: Sorcery Rarity: Rare Cost: {X}{R} Earthquake deals X damage to each creature without flying and each player

"Trying to meet a worthy man in the wrong way is as bad as closing the door on an invited guest

if Howling Mine is untapped

Set: Unlimited Edition Type: Sorcery Rarity: Rare Cost: {X}{U}{U} Target player draws X cards

Each Set Booster contains 12 Magic cards

where X is its power