Qasali Ambusher
Most free spells charge for their freedom with a setup cost or a narrow window; this one charges by waiting for the opponent to make the first move. The permission is purely defensive, and it is a static rule modifier rather than a trigger: a creature has to be attacking you, and you have to control both a Forest and a Plains, before the alternative cost unlocks and lets the card flash in for nothing. That makes it less a tempo play than a tax on the attack step. An opponent reading an open green-white board has to weigh whether their alpha strike walks into a 2/3 with reach that costs nothing to summon, ambushing a flier or trading down on the ground with no mana spent. The land clause checks for the types Forest and Plains, not for basics, so any dual that carries those subtypes (a shockland, an original dual, a typed fetch target) satisfies it: greedy fixing makes the condition easier to meet, not harder, which is the unusual part. Most ability-on-a-land riders punish the splash; this one quietly rewards the player who paid up for better mana. The stat line never threatens on offense, and that restraint is deliberate: this is a creature built to punish aggression, not to lead it, and its value peaks in the matchups where it sits idle on your turn and ambushes on theirs.
