Mutavault

T: Add CC. This land deals 2 damage to you.

This land enters with a charge counter on it. T: Add C. XX, T: Put X charge counters on this land. 3, T, Sacrifice this land: Destroy each nonland permanent with mana value equal to the number of charge counters on this land.

T: Add C. 1: This land becomes a 1/1 Blinkmoth artifact creature with flying until end of turn. It's still a land. 1, T: Target Blinkmoth creature gets +1/+1 until end of turn.

T: Add C. 3, T: Draw a card. Activate only if you control a creature with power 4 or greater.

Indestructible T: Add C. 5, T: Add five mana in any combination of colors.

This land enters tapped. Exalted (Whenever a creature you control attacks alone, that creature gets +1/+1 until end of turn.) T: Add C.

This land enters tapped. T: Add W or U. 3WU: Until end of turn, this land becomes a 4/4 white and blue Elemental creature with flying and vigilance. It's still a land.

Whenever a creature deals combat damage to you, that creature's controller gains control of this land. T: Add C. 1, T: Attacking creatures get +1/+0 until end of turn.