We also have sweet card draw with cards like Combustible Gearhulk, which our opponents can't refuse because of the implication
Vigilance keeps it relevant as the game develops, and alongside Giadas mana acceleration, it helps angel decks establish tempo early instead of playing catch-up from turn 2 onward
The game rules are mostly the same, but play is passed to the left when someone ends their turn
Your opponents are incentivized to kill omer, but doing so during combat procs its ability, so it will likely go unblocked
Giving haste to a reanimated creature can be huge, especially when paired with cards like Sower of Discord, Lord of the Void, or even Jumbo Cactuar
Seeing the top card before committing to the trigger makes this interaction even better