Mulldrifter [Friday Night Magic 2009] Goblin Warrior Rhonas the Indomitable can't attack

Rhonas the Indomitable can't attack or block unless you control another creature with power 4 or greater

Set: Commander 2016 Type: Artifact Creature — Construct Rarity: Rare Cost: {4} Converge — Crystalline Crawler enters the battlefield with a +1/+1 counter on it for each color of mana spent to cast it

Creatures the active player controls attack this turn if able

except it doesn't copy that creature's color and it has this ability

The sea gives

Mulldrifter [Friday Night Magic 2009] Goblin Warrior Rhonas the Indomitable can't attackSet: Friday Night Magic 2009 Type: Creature Elemental Rarity: Rare Cost: {4}{U} Flying When Mulldrifter enters the battlefield, draw two cards. Evoke {2}{U} (You may cast this spell for its evoke cost. If you do, it's sacrificed when it enters the battlefield.)