Plaza of Heroes

: Add .

: Add one mana of any color. Spend this mana only to cast a Pilot or Vehicle spell.

, : Target Vehicle becomes an artifact creature until end of turn.

: Add .

: Add one mana of any color. Spend this mana only to cast an Ally spell.

, , Sacrifice this land: Return target Ally you control to its owner's hand.

: Add .

, : Add one mana of any color.

Smear Campaign — , : Target legendary creature gains menace until end of turn. Activate only as a sorcery.

: Add .

, : Add one mana of any color.

: Put a +1/+1 counter on target creature. Activate only as a sorcery and only if you've cast an instant or sorcery spell this turn.

: Add .

: Add one mana of any color. Spend this mana only to cast a Sliver spell.

, : Create a 1/1 colorless Sliver creature token. Activate only if you control a Sliver.

: Add .

: Add one mana of any color. Spend this mana only to cast Phyrexian creature spells.

Corrupted — : Target 1/1 creature gets +2/+1 until end of turn. Activate only if an opponent has three or more poison counters.