Urza, Lord High Artificer Though making a Construct token is arguably the least broken ability on Urza, Lord High Artificer, its enough token generation for it to score a spot on this list
This effect reduces only the amount of colored mana you pay
Kellan is also good with cards such as Sword of Hearth and Home because he has double strike and can get you multiple triggers per attack
For this list, were only looking at cards that explicitly say copy an ability, which means cards like Yarok, the Desecrated that cause abilities to trigger an additional time wont be included
And even if youre struggling to make a dent in your opponents life totals early in the game, Song of Freyalises final step lets you swing for potentially big damage totally risk-free
It also plays well with certain enters abilities that are much stronger when they happen at instant speed, like those that make opponents discard cards