Simic Ascendancy [The Lost Caverns of Ixalan Commander] P-008 it has "When you attack

it has "When you attack with this

Set: Collectors’ Edition Type: Creature — Dwarf Warrior Rarity: Common Cost: {2}{R} {T}: Target creature with power 2 or less can't be blocked this turn

Set: Dragons of Tarkir Type: Creature — Dragon Rarity: Uncommon Cost: {4}{U}{B} Flying

"How dare these varmints befoul the shining streets of Prosperity

Set: Wilds of Eldraine Prerelease Promos Type: Creature — Human Knight Rarity: Rare Cost: {1}{G} Trample

Simic Ascendancy [The Lost Caverns of Ixalan Commander] P-008 it has "When you attackSet: The Lost Caverns of Ixalan Commander Type: Enchantment Rarity: Rare Cost: {G}{U} 1GU: Put a +1 +1 counter on target creature you control. Whenever one or more +1 +1 counters are put on a creature you control, put that many growth counters on Simic Ascendancy. At the beginning of your upkeep, if Simic Ascendancy has twenty or more growth counters on it, you win the game.