Ascend (If you control ten or more permanents, you get the city's blessing for the rest of the game.)
{2}{U}{U}, {T}, Put Timestream Navigator on the bottom of its owner's library: Take an extra turn after this one. Activate this ability only if you have the city's blessing.
At the beginning of your upkeep, put target creature card from a graveyard onto the battlefield under your control.
Whenever a creature you control attacks, it gets +1/+0 until end of turn for each other attacking creature that shares a creature type with it.
Whenever a creature you control dies, each other player sacrifices a creature.
