Once per turn: You can target 1 other Plant-Type monster on the field that has a Level; this card's Level becomes that monster's current Level, until the end of this turn.
How to Get
Can change level which is good for Synchro summoning.
Copying the level of another plant monster means that you can only Synchro summon even leveled monsters with Copy Plant and the monster he copied.
Use Copy Plant to Synchro summon the turn you summon him because it is unlikely he will survive your opponent's turn.
Since Copy Plant can copy the level of other Plant monsters, you can use it alongside other cards that can help you access Synchro summons quicker and easier. Homunculus the Alchemic Being can change his own attribute allowing you to access Synchro monsters that require specific attribute monsters. Lekunga can special summon Tokens you can use to Synchro summon. World Carrotweight Champion can special summon himself from the graveyard to use alongside Copy Plant as Synchro material.