There isn't any good direct comparison to Mangara's abilities, but the closest thing that popped into my head is Runic Armasaur, another creature whose card drawing ability is entirely dependent on your opponents' actions, making the card inconsistent where it sometimes draws you zero cards and sometimes floods you with card draw
Gorma, the Gullet Gorma, the Gullet is an ever-growing Golgari commander that benefits greatly from sacrifice strategies
Sometimes you just cant beat a classic card
An ornate design inspired by the lavish Mystical Archives frames
When a planeswalker is on the battlefield, an opponent can choose which creatures they want to send at the opponent's life total (going face) and which, if any, they want to divert towards the walker
Kheru Goldkeeper The best uncommon in the set is Kheru Goldkeeper, a decent-sized dragon that can make others into dragons via its renew ability