Yet another infinite turn combo.

Sacrifice a creature: Add one mana of any color.

When this land enters, sacrifice it unless you return a non-Lair land you control to its owner's hand. : Add , , or .

Haste Modular 2 (This creature enters with two +1/+1 counters on it. When it dies, you may put its +1/+1 counters on target artifact creature.)

Flying This creature enters with three +1/+1 counters on it. At the beginning of your upkeep, you may remove any number of +1/+1 counters from this creature. If you do, create that many 1/1 colorless Tetravite artifact creature tokens. They each have flying and "This token can't be enchanted." At the beginning of your upkeep, you may exile any number of tokens created with this creature. If you do, put that many +1/+1 counters on this creature.

, Sacrifice five artifacts: Take an extra turn after this one.