Wild Shape / Magecraft glitch. To reproduce the bug, use dragonguard elite or a clever lumimancer. Lumimancer is the worst one because it gets a +2 bonus. Wild shape should give you the option of a 1/3 turtle hexproof, 3/3 trample, or 1/5 reach. On magecraft abilities cards it does not take on these attributes but stacks them. Casting one 3/3 trample wild shape on a lumimancer gives it +2/+2 from mage craft and a +3 bonus. I have seen 3rd turn 10/10 with trample from this bug. Wild shape “should” turn the creature into a 3/3. Not stack on top of existing. Its like giving +5/+5 and trample for one green mana. That is insane