Target creature gets +4/+4 until end of turn.
RetraceRetrace is a static ability that functions while the card with retrace is in a player’s graveyard. “Retrace” means “You may cast this card from your graveyard by discarding a land card as an additional cost to cast it.” Casting a spell using its retrace ability follows the rules for paying additional costs in rules 601.2b and 601.2f–h. (CR 702.81) (You may
castTo cast a spell is to take it from the zone it’s in (usually the hand), put it on the stack, and pay its costs, so that it will eventually resolve and have its effect. A player may cast a spell if they have priority. See rule 601, “Casting Spells.”
To cast a card is to cast it as a spell. (CR 701.5) this card from your graveyard by discarding a land card in addition to paying its other costs.)